| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 74 | |
| #2 | Canada | 16 | |
| #3 | France | 1 | |
| #4 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Measurement | |
| #3 | Control | |
| #4 | Mechanical elements | |
| #5 | Telecommunications | |
| #6 | Machine tools | |
| #7 | Chemical engineering |
| # | Technology | |
|---|---|---|
| #1 | Unspecified technologies | |
| #2 | Measuring volume | |
| #3 | Systems controlling non-electric variables | |
| #4 | Transmission systems | |
| #5 | Unspecified technologies | |
| #6 | Venting or aerating devices | |
| #7 | Grinding or polishing devices | |
| #8 | Gearing | |
| #9 | Alarm systems | |
| #10 | Separation |
| # | Name | Total Patents |
|---|---|---|
| #1 | Connet Frederick N | 17 |
| #2 | Smith Jr Ed S | 13 |
| #3 | Huxford George T | 9 |
| #4 | Thoresen John C | 8 |
| #5 | Miner Irving O | 8 |
| #6 | Lowe Rudy P | 6 |
| #7 | Smith Ed S Jr | 5 |
| #8 | Hartley John R | 4 |
| #9 | Richardson Charles G | 3 |
| #10 | Gregory John H | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US2592237A | Pump stroke adjusting device | |
| US2659531A | Totalizing apparatus | |
| US2586427A | Telemetric apparatus | |
| US2537246A | Sand expansion indicator | |
| US2614424A | Pneumatic apparatus for measuring fluid pressure | |
| US2459362A | Photographic printing apparatus having a rotary light-transmitting cylinder and an endless belt bearing against the cylinder | |
| US2440981A | Pumping system | |
| US2401121A | Means for constructing filter bottoms | |
| US2386874A | Venting means | |
| US2424766A | Telemetric apparatus | |
| US2401122A | Sand expansion indicator | |
| US2308923A | Pressure relay unit | |
| US2312944A | Density compensator for flow meters | |
| US2322374A | Control apparatus | |
| US2312926A | Instrument mounting | |
| US2275638A | Telemetering system | |
| US2264796A | Open nozzle | |
| US2302458A | Telemetric apparatus | |
| US2357341A | Flow controller | |
| US2324590A | Electromagnetic clutch apparatus |