| Class Number |
Class Name |
Patents |
| 166/ |
Processes (166/244.1) |
0 |
| 166/100 |
Lateral probe or port sealed against well wall |
95 |
| 166/101 |
Packer or plug and pump or plunger means exerting outward pressure |
15 |
| 166/102 |
Convertible |
10 |
| 166/104 |
With motor for rotary or oscillating motion |
38 |
| 166/105 |
With eduction pump or plunger |
344 |
| 166/113 |
Combined (e.g., with non-electrical indicating) |
114 |
| 166/114 |
Central member with pre-set packer or plug in same conduit |
15 |
| 166/115 |
Central chamber sealed with respect to prepositioned modified surrounding conduit |
88 |
| 166/117 |
Receptacle or part thereof left in well |
28 |
| 166/117.5 |
Means for guiding insertable element laterally of well axis (e.g., whipstock) |
270 |
| 166/117.7 |
Means anchored against rotation in one conduit section for relatively rotating another section |
44 |
| 166/153 |
Pistons, fluid driven into well (e.g., cementing plugs) |
121 |
| 166/157 |
Screen with washing point or shoe |
16 |
| 166/162 |
Receptacles |
63 |
| 166/170 |
Brushing, scraping, cutting or punching-type cleaners |
51 |
| 166/177.1 |
Sonic device |
45 |
| 166/177.3 |
Wiper |
41 |
| 166/177.4 |
Cementing device |
142 |
| 166/177.5 |
Hydraulic fracturing device |
71 |
| 166/177.6 |
Vibrator |
58 |
| 166/177.7 |
Agitator |
23 |
| 166/178 |
With jar means for releasing stuck part |
148 |
| 166/179 |
Packers or plugs |
74 |
| 166/205 |
Screen with valve, closure, changeable restrictor or portion removable in well |
79 |
| 166/206 |
Expansible anchor or casing |
158 |
| 166/222 |
Whirling or lateral discharge or projectable nozzles |
105 |
| 166/227 |
Screens |
161 |
| 166/237 |
Detents or clutches |
162 |
| 166/241.1 |
Guide for device or conduit |
95 |
| 166/242.1 |
Conduit wall or specific conduit end structure |
229 |
| 166/243 |
Miscellaneous (e.g., anchor pipes) |
83 |
| 166/244.1 |
Processes |
64 |
| 166/316 |
Valves, closures or changeable restrictors |
70 |
| 166/335 |
Submerged well |
54 |
| 166/50 |
Wells with lateral conduits |
679 |
| 166/51 |
Means for forming filter beds (e.g., gravel placing) |
342 |
| 166/52 |
Plural wells |
117 |
| 166/53 |
Automatic |
407 |
| 166/54.1 |
With means for separately pumping from plural sources in well |
22 |
| 166/54.5 |
Means for cutting cable or rope below ground |
25 |
| 166/55 |
Means for perforating, weakening, bending or separating pipe at an unprepared point |
325 |
| 166/56 |
Screen and outside cleaning pipe |
5 |
| 166/57 |
With heating, refrigerating or heat insulating means |
236 |
| 166/63 |
With explosive or gas generating means in well |
188 |
| 166/64 |
With time or distance measuring, temperature responsive or counting means |
188 |
| 166/65.1 |
With electrical means |
536 |
| 166/67 |
With below and above ground modification |
51 |
| 166/75.11 |
Above ground apparatus |
71 |
| 166/901 |
Wells in frozen terrain |
36 |
| 166/902 |
For inhibiting corrosion or coating |
243 |
| 166/98 |
Grapple and well anchored lifting means |
90 |
| 166/99 |
With junk retrieving means |
76 |
