Electronic intercommunication unit

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Description

FIG. 1 is a front elevational view of an electronic intercommunication unit showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and

FIG. 7 is a front, top and right side elevational view thereof.

Referenced Cited
U.S. Patent Documents
D184548 March 1959 Waltman
D199677 January 1964 Mattingly
D202707 November 1965 Kloss
D210026 January 1968 Kahn
D211092 May 1968 Kahn
D243536 March 1, 1977 van de Poel
D259422 June 2, 1981 Taylor
D269432 June 21, 1983 Kowalik et al.
D269780 July 19, 1983 Doodson
D271694 December 6, 1983 Nomura
Foreign Patent Documents
2305488 August 1974 DEX
Other references
  • Lafayette 1977 Catalog, p. 64, Model 46617, 2 Way Electron. Intercom., p. 66; Model TS-10 Automatic Elect. Tel, Answer, & Recording Instrument. Telesis Fall 1973, vol. 3, No. 3; Article re Loudspeaking Phones; at p. 83, Fig. 4, New Companion Phone Set.
Patent History
Patent number: D285681
Type: Grant
Filed: Apr 29, 1983
Date of Patent: Sep 16, 1986
Assignee: Nippon Tsushin Kogyo Kabushiki Kaisha (Kanagawa)
Inventor: Suemitsu Nakashima (Kawasaki)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Horace B. Fay
Law Firm: Burns, Doane, Swecker & Mathis
Application Number: 6/490,139
Classifications
Current U.S. Class: D14/92; D14/52; D14/60; D14/57