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Class Information
Number: 404
Name: Road structure, process, or apparatus >
Description: This class provides for (1) highway, pathway or walkway structure, per se, including the form or arrangement of such structure for vehicular or foot traffic; (2) processes for making, installing, repairing or maintaining such structure; and (3) apparatus for installing, making, repairing or maintaining such structure where such structure, apparatus or process is not otherwise classifiable as either (a) specifically provided for in other loci or (b) of such general utility as to be provided for elsewhere on the basis of such general utility. (See Subclass References to the Current Class, below, for known collections of such nature and the particular lines of demarcation.)

Class Number	Class Name	No. of Patents
404/83	Apparatus	52
404/84.05	Automatic control	98
404/84.1	Of material leveling means	97
404/84.2	Adjusted to a predetermined path	31
404/84.5	Adjusted to an acoustical or optical signal	61
404/84.8	Specific to a sloped or curved application	18
404/99	Block laying	21
404/101	Material distribution means	185
404/102	Including dynamic means to densify material	55
404/103	Leveling or smoothing roller	54
404/108	Including material supply	155
404/109	Boom and bucket type	13
404/111	Liquid supply	86
404/110	Portable spreader box	98
404/107	Joint or crack filling	51
404/104	Shoulder paving or surface widening	65
404/105	With material supply to self-contained side forms, e.g., slip-forms	75
404/106	With material supply to unit-supporting rail type side forms	9
404/113	Means to agitate material	44
404/117	Compacting roller with vibrating means	151
404/115	Material immersed agitating means	19
404/116	Individual element, vertically oriented	12
404/114	Mounted on screed	107
404/87	Means to install or form joint	37
404/88	And means to hold or position dowel	32
404/89	Means to form groove in plastic or uncured roadway	43
404/100	Reinforcement material placing, laying or positioning	51
404/122	Rotating drum, roller or tire	108
404/128	Attachment or combined	60
404/131	Manually propelled, e.g., lawn roller	23
404/125	Plural roll axes angularly shiftable	9
404/126	Plural roll axes relatively shiftable	22
404/132	Plural rolls with common axes	26
404/124	Roller periphery characteristics	77
404/130	Shiftable or variable ballast	17
404/127	Specific to slope, trench or shoulder application	35
404/123	Three tandem rollers	13
404/129	With means to lubricate, scrape or clean roller surface	38
404/118	Screed or drag	297
404/120	Reciprocating	39
404/119	Supported on rail type side forms	84
404/121	Sheep foot roller	41
404/133.05	Tamper	103
404/133.2	Attached to a disparate device	34
404/133.1	Manually guided	73
404/112	Tool rotating in horizontal plane	127
404/90	With in situ means for both comminuting and treating, e.g., grading, oiling, stabilizing	199
404/91	Including removal and redepositing means	71
404/85	With means for alternative ground support by tool or transport means	23
404/86	Tool attachment type	12
404/95	With means for heating a road base, surface, or material	111
404/92	With means for in situ material preparation, e.g., mixing	86
404/96	With means for profile shaping, e.g., crown	83
404/98	Curb or gutter	74
404/97	Manually propelled	77
404/93	With surface marking (or grooving)	120
404/94	Applied to existing hard surface	181
404/2	Drain or gutter	171
404/4	Street or curb inlet for surface drainage	258
404/5	Separately attached curb box	28
404/3	With conduit support means	26
404/71	Miscellaneous road structure (e.g., heated pavement)	94
404/17	Pavement	114
404/19	Anti-slip surface	54
404/20	Abrasive impregnated	32
404/21	Including metal	18
404/18	Combined sheet and preformed module	21
404/27	Including bed	37
404/28	Having preformed element layer	40
404/29	Blocks	16
404/30	Having irregular aggregate module	3
404/31	Plural layers	96
404/47	Including joint means	105
404/67	Compound or composite	45
404/64	Preformed non-metallic only	74
404/66	Encased, laminated or composite	28
404/65	Externally profiled	56
404/69	Sealing cap or filler support	86
404/68	Strip or filler plus supporting bracket	97
404/52	With articulated dowel means	18
404/49	With internal cavity for deformable filler	28
404/56	With mid-slab bridge means	31
404/61	Cantilevered dowel or only filler support	7
404/59	End cushioned or lubricated dowel	9
404/60	Sleeved or telescoped at joint	27
404/57	Sliding plate pair	14
404/58	Horizontal slide plane	13
404/62	Supported dowel end	26
404/63	And supported dowel end	9
404/50	With offset or keyed slab ends	18
404/51	Plus bridge or dowel means	18
404/48	With transitory core, cap, screed, or installation means (e.g., forms)	39
404/53	With underlying bridge for adjacent slab ends	8
404/54	And overlying bridge means	8
404/55	Janus-faced angle member	5
404/22	Including light admitting means	11
404/24	Concrete frame	6
404/23	With removable lens	2
404/34	Modules or blocks (preformed)	120
404/44	Composite or compound	46
404/37	Including spacer means	35
404/38	Integral	28
404/39	Bevel or incline edge	25
404/41	Interfitting	196
404/42	Patterned	75
404/35	Portable mat type	164
404/36	Foraminous traffic surface	82
404/45	Reinforced	24
404/43	Supported by footing or beam	18
404/40	With separate interlocking member	76
404/46	Wood	21
404/70	Reinforced structure	91
404/32	Rubber or rubber-like	90
404/33	Integral key to base	16
404/25	Vault cover-closure	342
404/26	Elevation or level adjustment	184
404/72	Process	244
404/73	Handling or treating preformed modular unit	91
404/79	Heating	89
404/80	Including separate handling of different sized aggregate	11
404/75	In situ treatment of earth or roadway	292
404/76	Dust fixation or soil stabilization	58
404/77	Heating	74
404/78	Raising sunken pavement	15
404/74	Providing expansion joint	84
404/81	Separate handling of different sized aggregate	23
404/82	Sequential construction of diverse layers	116
404/134	Reinforcement structure per se	27
404/135	With road chair	16
404/136	Road chair per se	21
404/1	Road system (e.g., elevated, interchange)	64
404/9	Traffic director	404
404/12	Attenuated lane marker type	140
404/13	Discrete interfitted element	55
404/14	Impregnated with reflective material	216
404/15	Vibration inducing member (e.g., road stud, speed bump)	100
404/16	Including reflector	148
404/10	Yielding	346
404/11	Distinct biasing means recessed in roadway	94
404/6	Traffic steering device or barrier	851
404/7	Curb	113
404/8	With rim or edge protector	28