U.S. patent number D290,354 [Application Number 06/619,712] was granted by the patent office on 1987-06-16 for telephone set add-on accessory module. This patent grant is currently assigned to Northern Telecom Limited. Invention is credited to Desmond J. Ryan.
United States Patent | D290,354 |
Ryan | June 16, 1987 |
Inventors: | Ryan; Desmond J. (Ottawa, CA) |
---|---|
Assignee: | Northern Telecom Limited
(Montreal, CA) |
Appl. No.: | 06/619,712 |
Filed: | June 11, 1984 |
Current U.S. Class: | D14/246 |
Field of Search: | ;D14/52,53,58,59,60,62,66 ;179/179,84L,99R,1PC,146R,2EA,1R,1C,1D,1L,9K,9B,9BD |
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4515998 | May 1985 | Pinede et al. |
B A. Pargh Co. Inc. Cat. .COPYRGT.1983; at p. 35, GTE Speakerphone Model 83221.. |
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