Key unit for a keyboard musical instrument

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Description

FIG. 1 is a perspective view of a key unit for a keyboard musical instrument showing our new design;

FIG. 2 is a front elevational view thereof; the rear side being a mirror image thereto;

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; and

FIG. 6 is a right side elevational view thereof.

Referenced Cited
U.S. Patent Documents
D214169 May 1969 Bowman
D219027 October 1970 Miller
D225858 January 1973 Kline
D272624 February 14, 1984 Genaro et al.
360255 March 1887 Tanko
4124313 November 7, 1978 Schmidt et al.
4202640 May 13, 1980 Schmidt et al.
Foreign Patent Documents
0889394 September 1953 DEX
Patent History
Patent number: D310678
Type: Grant
Filed: Jan 25, 1988
Date of Patent: Sep 18, 1990
Inventors: Kanpei Takefuji (Shibuya-ku, Tokyo), Ritsuko Takefuji (Ohta-ku, Tokyo)
Primary Examiner: Bernard Ansher
Assistant Examiner: Adir Aronovich
Law Firm: Koda & Androlia
Application Number: 7/147,911
Classifications
Current U.S. Class: Element Or Attachment (D17/9)