| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 12 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Machines | |
| #3 | Electrical machinery and energy | |
| #4 | Packaging and shipping | |
| #5 | Civil engineering | |
| #6 | Machine tools | |
| #7 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Unspecified technologies | |
| #2 | Pumps | |
| #3 | Winches | |
| #4 | Earth drilling | |
| #5 | Rotary-pistons | |
| #6 | Lubricating | |
| #7 | Electric switches | |
| #8 | Dynamo-electric machines | |
| #9 | Percussive tools |
| # | Name | Total Patents |
|---|---|---|
| #1 | Wyman Charles W | 2 |
| #2 | Paget Win W | 2 |
| #3 | Johansen Harry C | 2 |
| #4 | Hall Edwin T | 1 |
| #5 | Osgood Robert C | 1 |
| #6 | Holmes Morris P | 1 |
| #7 | Holdsworth Fred D | 1 |
| #8 | Bartelson John L | 1 |
| #9 | Gartin Elmer G | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2114305A | Chuck mechanism | |
| US2122656A | Air compressor unit | |
| US2105492A | Lubricating device | |
| US2006366A | Rotary compressor | |
| US1740707A | Hoist | |
| US1740676A | Fluid-pressure motor | |
| US1686971A | Hoisting mechanism | |
| US1496543A | Compressor-unloading means | |
| US1740692A | Feeding mechanism | |
| US1556826A | Electrical controller | |
| US1556824A | Electric controller | |
| US1363204A | Compressor-controlling mechanism |