Inter-call device for telephone sets

- Nitsuko Limited
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Description

FIG. 1 is a front elevational view of a inter-call device for telephone sets showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a perspective view thereof;

The broken line showing of vertical lines on the keyboard in FIGS. 1 and 7 is for illustrative purposes only and forms no part of the claimed design.

Referenced Cited
U.S. Patent Documents
D212230 September 1968 Kamp
D249513 September 19, 1978 Zierhut
D250647 December 26, 1978 Breger
D250892 January 23, 1979 Renard
D254436 March 11, 1980 Bakal
D266086 September 7, 1982 Foggia et al.
D267879 February 8, 1983 Keely et al.
D272349 January 24, 1984 Dickinson
D273954 May 22, 1984 Bee
D276156 October 30, 1984 Goodin et al.
D282745 February 25, 1986 Brown
4513746 April 30, 1985 Aranyi et al.
4522327 June 11, 1985 Kortholl et al.
4530453 July 23, 1985 Green
Patent History
Patent number: D294499
Type: Grant
Filed: Jun 24, 1986
Date of Patent: Mar 1, 1988
Assignee: Nitsuko Limited (Kanagawa)
Inventor: Hiroshi Yamagishi (Kawasaki)
Primary Examiner: James M. Gandy
Assistant Examiner: Horace B. Fay, Jr.
Law Firm: Burns, Doane, Swecker & Mathis
Application Number: 6/877,976
Classifications
Current U.S. Class: D14/62; D14/52; D14/59