Extension calling unit for telephone

- Kabushiki Kaisha Toshiba
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Description

FIG. 1 is a front, top and left side perspective view of an extension calling unit for telephone, showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a rear elevational view thereof; and,

FIG. 7 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D271394 November 15, 1983 Brown et al.
D271763 December 13, 1983 Brown et al.
D306027 February 13, 1990 Gagnon
D312461 November 27, 1990 Ando
D315564 March 19, 1991 Kido et al.
D317920 July 2, 1991 Fuqua
D321873 November 26, 1991 Ando
D328300 July 28, 1992 Hattori et al.
D340057 October 5, 1993 Wetzel et al.
D374674 October 15, 1996 Elkins et al.
D375100 October 29, 1996 Toh
3928732 December 1975 Simon et al.
4394545 July 19, 1983 Doyle et al.
Other references
  • B. A. Pargh 1992 Spring/Summer Catalog, Extension Console at top left of the right side of the page, p. 331.
Patent History
Patent number: D389156
Type: Grant
Filed: Oct 15, 1996
Date of Patent: Jan 13, 1998
Assignee: Kabushiki Kaisha Toshiba (Kawasaki)
Inventor: Takahisa Yoneyama (Yokohama)
Primary Examiner: Jeffrey Asch
Law Firm: Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
Application Number: 0/61,005
Classifications
Current U.S. Class: D14/241
International Classification: 1403;