| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 11 | |
| #2 | Canada | 2 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Machines | |
| #3 | Measurement | |
| #4 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Electric switches | |
| #2 | Electric motor controls | |
| #3 | Unspecified technologies | |
| #4 | Resistors | |
| #5 | Special electric heating or lighting | |
| #6 | Measuring volume | |
| #7 | Starting of combustion engines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Whittingham George H | 13 |
| Publication | Filing date | Title |
|---|---|---|
| US1806377A | Friction switch mechanism | |
| US1632358A | Terminal for rheostats | |
| US1507266A | Ignition system for internal-combustion engines | |
| US1414913A | Ignition-circuit controller | |
| US764649A | Automatic motor-controller. | |
| US716504A | Electric switch. | |
| US712749A | Rheostat. | |
| US664986A | Electric switch. | |
| US662480A | Automatic circuit-controller. | |
| US659946A | Electric switch. | |
| CA60118A | Electric heater | |
| US656004A | Automatic resistance-reducing device. | |
| CA37066A | Electric switch |