U.S. patent number D338,165 [Application Number 07/756,082] was granted by the patent office on 1993-08-10 for optical emitter for use in priority traffic control. This patent grant is currently assigned to Minnesota Mining and Manufacturing Company. Invention is credited to Perry S. Dotterman, George A. Gregori.
United States Patent | D338,165 |
Gregori , et al. | August 10, 1993 |
Inventors: | Gregori; George A. (New Brighton, MN), Dotterman; Perry S. (Maplewood, MN) |
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Assignee: | Minnesota Mining and Manufacturing
Company (St. Paul, MN) |
Appl. No.: | 07/756,082 |
Filed: | September 6, 1991 |
Current U.S. Class: | D10/104.1 |
Field of Search: | ;D10/104,106,109,114,115,121,120 ;340/906,907,908,916,917 |
D224759 | September 1972 | Bingham |
3550078 | December 1970 | Long |
3881169 | April 1975 | Malach |
4017825 | April 1977 | Pickey |
4115757 | September 1978 | Blahunka |
4775865 | October 1988 | Smith et al. |
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