| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 11 | |
| #2 | Canada | 4 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Optics | |
| #3 | Measurement |
| # | Technology | |
|---|---|---|
| #1 | Lighting device details | |
| #2 | Non-portable lighting devices | |
| #3 | Optical systems | |
| #4 | Measuring light | |
| #5 | Indexing scheme for uses of lighting devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Dorey William A | 11 |
| #2 | Tuck Davis H | 1 |
| #3 | Mygatt Otis A | 1 |
| #4 | Logan Henry | 1 |
| #5 | Jenkins Howard L | 1 |
| #6 | Rolph Thomas W | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1472639A | Indirect-lighting unit | |
| US1410898A | Projection lens | |
| US1426280A | Reflector | |
| US1470602A | Refractor | |
| US1498214A | Photometric measuring instrument | |
| US1492020A | Illuminating appliance | |
| US1475260A | Illuminating appliance | |
| US1420977A | Illuminating appliance | |
| CA190863A | Illuminating device | |
| US1259493A | Illuminating appliance. | |
| US1359493A | Illuminating appliance | |
| US1259492A | Lantern-plate. | |
| CA265531A | Luminaire | |
| CA269643A | Luminaire | |
| CA269642A | Lighting fixture |