Extension ringing console apparatus for telephone sets

- Nitsuko Corporation
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Description

FIG. 1 is a front, top and right side perspective view of an extension ringing console for telephone sets;

FIGS. 2 and 3 are respectively front and rear elevational views thereof;

FIGS. 4 and 5 are left and right side elevational views thereof; and,

FIGS. 6 and 7 are respectively top and bottom plan views thereof.

Referenced Cited
U.S. Patent Documents
D212230 July 1968 Kamp
D232563 August 1974 Manchese
D266086 September 7, 1982 Fuggia et al.
D267173 December 7, 1982 Geongopulos
D271763 December 13, 1983 Brown et al.
D272439 January 31, 1984 Gibson
D277477 February 5, 1985 Fuggia et al.
D282745 February 25, 1986 Brown
D294499 March 1, 1988 Yamagishi
D300028 February 28, 1989 To
D307588 May 1, 1990 Barker et al.
Patent History
Patent number: D328300
Type: Grant
Filed: Oct 26, 1990
Date of Patent: Jul 28, 1992
Assignee: Nitsuko Corporation
Inventors: Akiyoshi Hattori (Kawasaki), Masanori Suzuki (Kawasaki)
Primary Examiner: Horace B. Fay, Jr.
Law Firm: Leydig, Voit & Mayer
Application Number: 7/603,856
Classifications
Current U.S. Class: D14/241