| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 13 | |
| #2 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Engines, pumps and turbines | |
| #3 | Mechanical elements | |
| #4 | Civil engineering | |
| #5 | Machine tools | |
| #6 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Pumps | |
| #2 | Unspecified technologies | |
| #3 | Earth drilling | |
| #4 | Venting or aerating devices | |
| #5 | Turning | |
| #6 | Marine propulsion | |
| #7 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Bridwell Chalon E | 14 |
| Publication | Filing date | Title |
|---|---|---|
| US2488075A | Valve cage | |
| US2449106A | Valve cage | |
| US2462605A | Valve cage | |
| US2356207A | Pumping mechanism | |
| US2363290A | Improved bleeder valve | |
| US2356208A | Pump anchor mechanism | |
| US2361989A | Pumping mechanism | |
| US2348241A | Oil well pumping means | |
| US2278399A | Pumping mechanism | |
| US2304237A | Pump | |
| US2189129A | Valve | |
| US1748408A | Boat | |
| US1589355A | Chuck | |
| CA700668A | Boat propelled by spiral type propellers |