U.S. patent number D319,439 [Application Number 07/511,026] was granted by the patent office on 1991-08-27 for adjunct answering machine. This patent grant is currently assigned to AT&T Bell Laboratories. Invention is credited to David C. Danielson, David Dubbs, Daniel K. Harden, Raymond Motluck, Michael P. Zambelli.
United States Patent | D319,439 |
Danielson , et al. | August 27, 1991 |
Inventors: | Danielson; David C. (New Canaan, CT), Dubbs; David (Morristown, NJ), Harden; Daniel K. (San Jose, CA), Motluck; Raymond (Noblesville, IN), Zambelli; Michael P. (Livingston, NJ) |
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Assignee: | AT&T Bell Laboratories
(Murray Hill, NJ) |
Appl. No.: | 07/511,026 |
Filed: | April 19, 1990 |
Current U.S. Class: | D14/141.1; D14/142; D14/243 |
Field of Search: | ;D14/141,151,142 ;379/429,418,419,440,420,435,436,432 |
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D298618 | November 1988 | Martinez |
D301144 | May 1989 | Jackwicz et al. |
D306591 | March 1990 | Weisz et al. |
D306860 | March 1990 | Dickson |
4596901 | June 1986 | Hanscom et al. |
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