U.S. patent number D374,674 [Application Number D/039,812] was granted by the patent office on 1996-10-15 for telephone key expansion unit. This patent grant is currently assigned to Siemens Rolm Communications Inc.. Invention is credited to David E. Bryant, Erich C. Elkins, Doug A. Erwin, Mary E. Kingsbury, Wayne E. McKinnon, William C. McRight.
United States Patent | D374,674 |
Elkins , et al. | October 15, 1996 |
Inventors: | Elkins; Erich C. (San Francisco, CA), McKinnon; Wayne E. (Georgetown, TX), Bryant; David E. (Austin, TX), Kingsbury; Mary E. (Dallas, TX), Erwin; Doug A. (Austin, TX), McRight; William C. (Round Rock, TX) |
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Assignee: | Siemens Rolm Communications
Inc. (Santa Clara, CA) |
Appl. No.: | D/039,812 |
Filed: | June 2, 1995 |
Current U.S. Class: | D14/140.9 |
Field of Search: | ;D14/140,142,149,150,218,240,241 ;379/419,420,428,440,433-436,441,442 |
D306027 | February 1990 | Gagnon |
D306859 | March 1990 | Helstab et al. |
D311918 | November 1990 | Renard |
D312461 | November 1990 | Ando |
D317920 | July 1991 | Fuqua et al. |
D319235 | August 1991 | Sato |
D340057 | October 1993 | Wetzel et al. |
D346385 | April 1994 | Wetzel et al. |
4790007 | December 1988 | Richter et al. |
5373556 | December 1994 | Johnson |
B A. Pargh, 1992 Spring/Summer Catalog, Panasonic 6X16 Electronic Modular Switching System, p. 330, 2nd Article from top at far right.. |
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