| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 62 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines | |
| #3 | Mechanical elements | |
| #4 | Engines, pumps and turbines | |
| #5 | Furniture and games |
| # | Technology | |
|---|---|---|
| #1 | Earth drilling | |
| #2 | Unspecified technologies | |
| #3 | Venting or aerating devices | |
| #4 | Pumps | |
| #5 | Unspecified technologies | |
| #6 | Kitchen equipment | |
| #7 | Shafts | |
| #8 | Pipes | |
| #9 | Domestic washing | |
| #10 | Pistons and sealings |
| # | Name | Total Patents |
|---|---|---|
| #1 | Penick Arthur J | 62 |
| #2 | Penick Kirby T | 54 |
| #3 | Allen Cochrum | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2376619A | Valve assembly | |
| US2400254A | Casing head | |
| US2373050A | Cleaning mop | |
| US2385463A | Gate valve assembly | |
| US2406099A | Valve assembly | |
| US2382578A | Producing equipment for wells | |
| US2343156A | Roaster | |
| US2348642A | Lubricating system for valve assemblies | |
| US2306102A | Casing head | |
| US2313169A | Well head assembly | |
| US2298507A | Elevator | |
| US2335355A | Producting equipment for wells | |
| US2219271A | Valve assembly | |
| US2312476A | Well head | |
| US2216129A | Valve assembly | |
| US2224447A | Valve assembly | |
| US2224446A | Valve mechanism | |
| US2187840A | Seating tool | |
| US2223702A | Pressure control tubing head | |
| US2213504A | Pressure control means for drilling apparatus |