Key unit for keyboard musical instrument

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Description

FIG. 1 is a top, rear and right side perspective view of the key unit for keyboard musical instrument showing my new design;

FIG. 2 is a right side elevational view thereof, the left side being a mirror image thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a front elevational view thereof; and

FIG. 6 is a rear elevational view thereof.

Referenced Cited
U.S. Patent Documents
D297430 August 30, 1988 Beard et al.
D310678 September 18, 1990 Takefuji et al.
360255 March 1887 Janko
721706 March 1903 Huseby
4124313 November 7, 1978 Schmidt et al.
Foreign Patent Documents
889394 July 1953 DEX
Patent History
Patent number: D324231
Type: Grant
Filed: Jun 13, 1990
Date of Patent: Feb 25, 1992
Inventor: Noritaka Mutoh (Shibuya-ku, Tokyo)
Primary Examiner: Theodore M. Shooman
Assistant Examiner: Adir Aronovich
Law Firm: Koda and Androlia
Application Number: 7/538,402
Classifications
Current U.S. Class: Element Or Attachment (D17/9)