Speech module for an intercommunication system

- Tunstall Telecom Limited
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Description

FIG. 1 is a front, right side and bottom perspective view of a speech module for an intercommunication system showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right 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
D220268 March 1971 Kliewer
D243536 March 1, 1977 van de Poel
D282360 January 28, 1986 Yamagata et al.
D283130 March 25, 1986 Boenning
D297517 September 6, 1988 Yuen
D299138 December 27, 1988 Hampf
D301716 June 20, 1989 Ohzu
Patent History
Patent number: D307273
Type: Grant
Filed: Nov 12, 1987
Date of Patent: Apr 17, 1990
Assignee: Tunstall Telecom Limited (Whitley Bridge)
Inventor: Martin F. Carlile (Doncaster)
Primary Examiner: Bernard Ansher
Assistant Examiner: Theodore M. Shooman
Law Firm: Darby & Darby
Application Number: 7/120,088
Classifications
Current U.S. Class: Intercom (7) (D14/159)