Musical keyboard

- IBM
Skip to: Description  ·  References Cited  · Patent History  ·  Patent History
Description

FIG. 1 is a top, front, right perspective view of a musical keyboard showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a left elevational view thereof; and,

FIG. 7 is a right elevational view thereof.

Referenced Cited
U.S. Patent Documents
D344971 March 8, 1994 Roose
D345967 April 12, 1994 Kroner
D354053 January 3, 1995 Kao
D358808 May 30, 1995 Murdoch et al.
4352313 October 5, 1982 Ny
4655117 April 7, 1987 Roose
4704940 November 10, 1987 Cummings
5088378 February 18, 1992 DaLaTorre
5392682 February 28, 1995 McCartney-Hoy
Other references
  • Customizable Keys Using Add-On "Plugs", IBM Technical Disclosure Bulletin, vol. 33, No. 1B, Jun., 1990.
Patent History
Patent number: D373134
Type: Grant
Filed: Dec 5, 1994
Date of Patent: Aug 27, 1996
Assignee: International Business Machines Corporation (Armonk, NY)
Inventors: Randal L. Bertram (Raleigh, NC), John D. Swansey (Durham, NC)
Primary Examiner: Freda Nunn
Attorney: Anthony N. Calfee, Halter & Griswold Magistrale
Application Number: 0/31,743
Classifications
Current U.S. Class: Keyboard Type (D17/1); D14/115