| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 12 | |
| #2 | Switzerland | 2 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Mechanical elements | |
| #3 | Measurement | |
| #4 | Machines | |
| #5 | Computer technology | |
| #6 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Dynamo-electric machines | |
| #2 | Time-interval measuring | |
| #3 | Unspecified technologies | |
| #4 | Clutches and brakes | |
| #5 | Gearing | |
| #6 | Electric switches | |
| #7 | Electromechanical clocks | |
| #8 | Counting mechanisms | |
| #9 | Nails | |
| #10 | Vehicle transmission mounting |
| # | Name | Total Patents |
|---|---|---|
| #1 | Schellens Eugene L | 7 |
| #2 | Gates Jr Eugene H | 2 |
| #3 | Knight Ronald F | 2 |
| #4 | Gibbs Norman E | 1 |
| #5 | Smith John J | 1 |
| #6 | Company Incorporated The R W C | 1 |
| #7 | Hugh Spencer | 1 |
| #8 | Incorporated The R W Cramer Co | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2722297A | Means to arrest and prevent incorrect direction of gear rotation | |
| US2589293A | Small electric motor | |
| US2582285A | Timer for causing brief actuations at prolonged intervals | |
| US2551179A | Running-time meter | |
| US2492197A | Small electric motor | |
| US2436231A | Self-starting synchronous motor | |
| US2479922A | Electrical timer | |
| US2444146A | Timing switch | |
| US2409155A | Radio transmission apparatus | |
| US2334040A | Electric motor | |
| US2193820A | Clamping device | |
| US2230191A | Interval timing device |