Telephone key expansion unit
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Description
FIG. 1 is a perspective view of the telephone key expansion unit of the present invention;
FIG. 2 is a top view;
FIG. 3 is a front elevational view;
FIG. 4 is a right-side elevational view;
FIG. 5 is a left-side elevational view;
FIG. 6 is a rear elevational view; and,
FIG. 7 is a bottom view.
The broken lines showing of a telephone in FIG. 1 is for illustrative purposes only and forms no part of the claimed design.
Referenced Cited
U.S. Patent Documents
Other references
D306027 | February 13, 1990 | Gagnon |
D306859 | March 27, 1990 | Helstab et al. |
D311918 | November 6, 1990 | Renard |
D312461 | November 27, 1990 | Ando |
D317920 | July 2, 1991 | Fuqua et al. |
D319235 | August 20, 1991 | Sato |
D340057 | October 5, 1993 | Wetzel et al. |
D346385 | April 26, 1994 | Wetzel et al. |
4790007 | December 6, 1988 | Richter et al. |
5373556 | December 13, 1994 | Johnson |
- B. A. Pargh, 1992 Spring/Summer Catalog, Panasonic 6X16 Electronic Modular Switching System, p. 330, 2nd Article from top at far right.
Patent History
Patent number: D374674
Type: Grant
Filed: Jun 2, 1995
Date of Patent: Oct 15, 1996
Assignee: Siemens Rolm Communications Inc. (Santa Clara, CA)
Inventors: Erich C. Elkins (San Francisco, CA), Wayne E. McKinnon (Georgetown, TX), David E. Bryant (Austin, TX), Mary E. Kingsbury (Dallas, TX), Doug A. Erwin (Austin, TX), William C. McRight (Round Rock, TX)
Primary Examiner: Jeffrey Asch
Application Number: 0/39,812
Type: Grant
Filed: Jun 2, 1995
Date of Patent: Oct 15, 1996
Assignee: Siemens Rolm Communications Inc. (Santa Clara, CA)
Inventors: Erich C. Elkins (San Francisco, CA), Wayne E. McKinnon (Georgetown, TX), David E. Bryant (Austin, TX), Mary E. Kingsbury (Dallas, TX), Doug A. Erwin (Austin, TX), William C. McRight (Round Rock, TX)
Primary Examiner: Jeffrey Asch
Application Number: 0/39,812
Classifications
Current U.S. Class:
D14/241