U.S. patent number D355,134 [Application Number D/018,345] was granted by the patent office on 1995-02-07 for spirit level. Invention is credited to Donald F. Kennedy.
United States Patent | D355,134 |
Kennedy | February 7, 1995 |
Inventors: | Kennedy; Donald F. (Del Mar, CA) |
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Appl. No.: | D/018,345 |
Filed: | February 4, 1994 |
Current U.S. Class: | D10/69 |
Field of Search: | ;D10/69 ;33/365-390 |
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D280185 | August 1985 | Wright |
D332226 | January 1993 | Hutchins et al. |
2789363 | April 1957 | Miley |
4506450 | March 1985 | Fleming et al. |
4876798 | October 1989 | Zimmerman |
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