| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 20 |
| # | Industry | |
|---|---|---|
| #1 | Audio-visual technology | |
| #2 | Machines | |
| #3 | Civil engineering | |
| #4 | Optics | |
| #5 | Control | |
| #6 | Electrical machinery and energy | |
| #7 | Machine tools |
| # | Name | Total Patents |
|---|---|---|
| #1 | Luce Richard W | 10 |
| #2 | Haggart Jr John C | 7 |
| #3 | Anton Diebold | 2 |
| #4 | Patton Frank L | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US2337167A | Reflecting unit | |
| US2362131A | Luminous baton | |
| US2304553A | Solenoid | |
| US2317684A | Road marker | |
| US2330872A | Traffic analyzer | |
| US2286085A | Reflector unit and method of making said unit | |
| US2255748A | Reflector device | |
| US2282049A | Method of sinking posts | |
| US2229075A | Means for mounting and locking roadside markers | |
| US2253346A | Reflector device | |
| US2261688A | Reflector device | |
| US2157209A | Method of making lenses | |
| US2233057A | Molding apparatus | |
| US2129017A | Reflecting unit | |
| US1995856A | Sign construction | |
| US1974576A | Reflector sign | |
| US1974575A | Reflecting sign | |
| US1993068A | Sign | |
| US1979695A | Mounting for reflector units in signs | |
| US1998936A | Fastening device |