U.S. patent number D256,917 [Application Number 05/872,290] was granted by the patent office on 1980-09-16 for combination telephone instrument. This patent grant is currently assigned to International Telephone and Telegraph Corporation. Invention is credited to John De Filippis, Clifford W. Shackelton.
United States Patent | D256,917 |
De Filippis , et al. | September 16, 1980 |
Inventors: | De Filippis; John (South Amboy, NJ), Shackelton; Clifford W. (Keyport, NJ) |
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Assignee: | International Telephone and
Telegraph Corporation (N/A) |
Appl. No.: | 05/872,290 |
Filed: | January 25, 1978 |
Current U.S. Class: | D14/144; D10/2; D14/151; D14/152; D14/153 |
Current International Class: | D1403 |
Field of Search: | ;179/9H,6R,6TA,6.31,1R,1D,179,178,15BZ,7.1,2TC ;D14/52,53,57,59,58 ;D10/2 |
D229423 | November 1973 | Pessner |
D243619 | March 1977 | Torbjorn |
D244469 | May 1977 | Buchin |
D251844 | May 1979 | Kramer |
2487013 | November 1949 | Zibelman |
3911446 | October 1975 | Albertini |
3982072 | September 1976 | Dean |
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