Inter-call device for telephone sets

- Kabushiki Kaisha Toshiba
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Description

FIG. 1 is a top, front and right side perspective view of an inter-call device for telephone sets showing my new design,

FIG. 2 is a top plan view thereof,

FIG. 3 is a front elevational view thereof,

FIG. 4 is a rear elevational view thereof,

FIG. 5 is a bottom plan view thereof,

FIG. 6 is a left side elevational view thereof.

Referenced Cited
U.S. Patent Documents
D232563 August 1974 Marchese
D233765 November 1974 Marchese
D250891 January 23, 1979 Renard
D259933 July 21, 1981 Foggia et al.
D268934 May 10, 1983 Waldon
D271394 November 15, 1983 Brown et al.
D271763 December 13, 1983 Brown et al.
D273954 May 22, 1984 Bee
D287723 January 13, 1987 Kido
D300029 February 28, 1989 Kido et al.
Patent History
Patent number: D312461
Type: Grant
Filed: Jun 2, 1989
Date of Patent: Nov 27, 1990
Assignee: Kabushiki Kaisha Toshiba (Kanagawa)
Inventor: Takaharu Ando (Ryugasaki)
Primary Examiner: Horace B. Fay, Jr.
Law Firm: Banner, Birch, McKie & Beckett
Application Number: 7/360,745
Classifications
Current U.S. Class: D14/241