| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 7 | |
| #2 | Canada | 4 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Optics | |
| #3 | Measurement |
| # | Technology | |
|---|---|---|
| #1 | Dynamo-electric machines | |
| #2 | Electric discharge tubes | |
| #3 | Special electric heating or lighting | |
| #4 | Cameras | |
| #5 | Electromechanical clocks |
| # | Name | Total Patents |
|---|---|---|
| #1 | Henninger Andrew F | 11 |
| #2 | Henninger George D | 8 |
| Publication | Filing date | Title |
|---|---|---|
| US2825795A | Flashtube mounting structure | |
| US2753471A | Constant speed d. c. motor | |
| US2516209A | Electrical flash lamp system | |
| US2282582A | Motor | |
| US2266037A | Electric motor apparatus | |
| US2273520A | Light source | |
| US2217315A | Light source | |
| CA408758A | Electric motor apparatus | |
| CA415536A | Gaseous conduction lamp manufacture | |
| CA350987A | Negative glow display device | |
| CA412330A | Light source |