U.S. patent number D332,987 [Application Number 07/605,015] was granted by the patent office on 1993-02-02 for ultrasonic cockroach repellent. Invention is credited to Jan Der-Jinn.
United States Patent | D332,987 |
Der-Jinn | February 2, 1993 |
Inventors: | Der-Jinn; Jan (Taipei, TW) |
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Appl. No.: | 07/605,015 |
Filed: | October 26, 1990 |
Current U.S. Class: | D22/120; D23/366 |
Field of Search: | ;D22/119,120,122,123 ;D23/366 ;239/34,35,56,57,44,58 ;43/121,125,129,131 |
D269699 | July 1983 | May et al. |
D280538 | September 1985 | Von Till |
D289919 | May 1987 | O'Neil, Jr. |
D305457 | January 1990 | Nakao |
2026393 | December 1935 | Linck |
2710485 | June 1955 | Starr |
4526320 | January 1985 | von Philipp et al. |
4549693 | October 1985 | Barlics |
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