U.S. patent number D309,582 [Application Number 07/096,069] was granted by the patent office on 1990-07-31 for digital thermo-hygrometer. This patent grant is currently assigned to 501 Tanaka Manufacturing Company Limited. Invention is credited to Osamu Suzuki.
United States Patent | D309,582 |
Suzuki | July 31, 1990 |
Inventors: | Suzuki; Osamu (Tokyo, JP) |
---|---|
Assignee: | 501 Tanaka Manufacturing Company
Limited (Tokyo, JP) |
Appl. No.: | 07/096,069 |
Filed: | September 11, 1987 |
Current U.S. Class: | D10/53 |
Field of Search: | ;D10/50,51,52,53,56,60 ;73/335,336,442 ;324/65R,693,694,696,703,721,141,142,143,204,208 ;337/112,327,369,380,381,414 ;236/46R,47,94 |
D156094 | November 1949 | Hallward |
D279869 | July 1985 | Tanaka |
D288536 | March 1987 | Tanaka |
D297217 | August 1988 | Wolff |
3709039 | January 1973 | Preiser et al. |
4737707 | April 1988 | Mori et al. |
4868491 | September 1989 | Black |
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