Electronic keyboard musical instrument

- Yamaha Corporation
Skip to: Description  ·  References Cited  · Patent History  ·  Patent History
Description

FIG. 1 is a top perspective view of an electronic keyboard musical instrument showing a new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a rear elevation view thereof; and

FIG. 7 is a left side elevation view thereof.

Referenced Cited
U.S. Patent Documents
D224444 July 1972 Chilton
D265832 August 17, 1982 Kira et al.
D276534 November 27, 1984 Bontempi
D313031 December 18, 1990 Yamawaki
D314204 January 29, 1991 Yamawaki
3855894 December 1974 Thomas et al.
4653375 March 31, 1987 Honda et al.
Foreign Patent Documents
655901-4 August 1987 JPX
721766 August 1987 JPX
Other references
  • The Music Trades, Jan. 1986, p. 102 (Hohner's PK 250 Keyboard). Radio Shack catalog, 8/27/87, p. 52 (Concertmate-650 Keyboard).
Patent History
Patent number: D319248
Type: Grant
Filed: Feb 9, 1989
Date of Patent: Aug 20, 1991
Assignee: Yamaha Corporation (Shizuoka)
Inventor: Ikuro Mine (Hamamatsu)
Primary Examiner: Bernard Ansher
Assistant Examiner: Adir Aronovich
Law Firm: Weingarten, Schurgin, Gagnebin & Hayes
Application Number: 7/308,804
Classifications
Current U.S. Class: Keyboard Type (D17/1)