| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 65 | |
| #2 | Canada | 7 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Engines, pumps and turbines | |
| #3 | Machines | |
| #4 | Mechanical elements | |
| #5 | Civil engineering |
| # | Name | Total Patents |
|---|---|---|
| #1 | Guth Edwin F | 72 |
| Publication | Filing date | Title |
|---|---|---|
| US2803741A | Ceiling illumination | |
| US2745001A | Light diffusors for illuminating devices | |
| US2615123A | Ceiling fixture for fluorescent lamps | |
| US2440603A | Lighting fixture | |
| US2488012A | Lighting fixture | |
| US2572825A | Built-in lighting fixture with adjustable spotlight | |
| US2526074A | Lighting fixture having means to shield the light source | |
| US2478822A | Lighting fixture | |
| US2556690A | Lighting fixture for elongated tubular lamps having means to shield the lamps | |
| US2401635A | Lighting fixture | |
| US2369228A | Fluorescent fixture | |
| US2379798A | Lighting fixture | |
| US2319732A | Lighting fixture | |
| US2331774A | Lighting fixture | |
| US2277433A | Plastic diffuser | |
| US2262582A | Illuminating fixture | |
| US2143149A | Light directing shield | |
| US2132784A | Lighting fixture | |
| US2143148A | Light shield | |
| US2121430A | Fixture |