| Class Number |
Class Name |
Patents |
| 313/1 |
Plural unit |
44 |
| 313/10 |
With temperature indicator |
4 |
| 313/106 |
Secondary emission prevention |
30 |
| 313/107.5 |
Variable width electron stream (e.g., magic eye) |
0 |
| 313/11 |
With temperature modifier |
55 |
| 313/110 |
With optical device or special ray transmissive envelope |
250 |
| 313/118 |
Spark plugs |
163 |
| 313/146 |
With movable electrode or shield |
59 |
| 313/153 |
With magnetic device |
62 |
| 313/163 |
Liquid electrode discharge devices |
23 |
| 313/230 |
Discharge device with positive ion emitter |
82 |
| 313/231.01 |
Fluent material supply or flow directing means |
77 |
| 313/232 |
Electrodes immersed in liquid |
20 |
| 313/233 |
Involving particular degree of vacuum |
6 |
| 313/234 |
Electrode exterior to envelope |
174 |
| 313/235 |
Imperfect electrical contact between electrodes |
1 |
| 313/236 |
Stand-by electrode type (with spare electrode) |
6 |
| 313/237 |
With electrode replacement means or demountable |
37 |
| 313/238 |
With support and/or spacing structure for electrode and/or shield |
115 |
| 313/293 |
Discharging devices with apertured electrode (e.g., grid) interposed between two electrodes |
96 |
| 313/305 |
Discharge heated anode type (e.g., cathanode) |
7 |
| 313/306 |
Discharge devices having three or more electrodes |
196 |
| 313/309 |
Discharge devices having a multipointed or serrated edge electrode |
1,120 |
| 313/310 |
Discharge devices having a thermionic or emissive cathode |
631 |
| 313/311 |
Discharge devices having an electrode of particular material |
448 |
| 313/312 |
With casing of jacket for envelope |
42 |
| 313/313 |
With electrical shield or static charge distribution means |
129 |
| 313/314 |
Nonrepairable |
6 |
| 313/315 |
Incandescent lamps |
205 |
| 313/317 |
With envelope |
75 |
| 313/323 |
Combined |
10 |
| 313/325 |
Miscellaneous discharge devices |
89 |
| 313/326 |
Electrode and shield structures |
104 |
| 313/358 |
Miscellaneous (e.g., electrolytic light source) |
19 |
| 313/359.1 |
With positive or negative ion acceleration |
225 |
| 313/364 |
Cathode ray tube |
44 |
| 313/48 |
With handle |
8 |
| 313/483 |
With luminescent solid or liquid material |
194 |
| 313/49 |
With detachable electrical connector or support |
50 |
| 313/513 |
With character display (e.g., digits or letters) |
57 |
| 313/52 |
Convertible |
1 |
| 313/523 |
Photosensitive |
65 |
| 313/53 |
Flame or explosion type |
0 |
| 313/54 |
With radioactive material |
40 |
| 313/545 |
Having valve with getter, gas/vapor generating material or pressure control means |
22 |
| 313/546 |
With frangible capsule containing getter, gas or vapor generating material |
46 |
| 313/547 |
Having heating means to control gas/vapor, gas or vapor generating means, or getter means |
39 |
| 313/552 |
Having pressure control of gas or vapor |
43 |
| 313/553 |
With getter |
141 |
| 313/563 |
Having gas generating material |
17 |
| 313/564 |
Having vapor generating material |
39 |
| 313/567 |
With gas or vapor |
114 |
| 313/62 |
Cyclotrons |
63 |
| 313/7 |
With evacuating pump |
22 |
| 313/8 |
Arc and separate incandescent body |
1 |
| 313/9 |
Filament and separate incandescent body |
2 |
| 313/93 |
Geiger-mueller type |
48 |
| 313/DIG.7 |
Bombardment induced conductivity |
3 |
