Computer track ball
Description
FIG. 1 is a perspective view of a computer track ball showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a top plan view thereof;
FIG. 5 is a bottom plan view thereof; and,
FIG. 6 is a right side elevational view thereof, the left side being a mirror image.
Referenced Cited
Patent History
Patent number: D332093
Type: Grant
Filed: Feb 21, 1991
Date of Patent: Dec 29, 1992
Inventor: Tso S. Yang (Taipei)
Primary Examiner: Susan J. Lucas
Assistant Examiner: M. H. Tung
Law Firm: Rogers, Howell & Haferkamp
Application Number: 7/658,522
Type: Grant
Filed: Feb 21, 1991
Date of Patent: Dec 29, 1992
Inventor: Tso S. Yang (Taipei)
Primary Examiner: Susan J. Lucas
Assistant Examiner: M. H. Tung
Law Firm: Rogers, Howell & Haferkamp
Application Number: 7/658,522
Classifications
Current U.S. Class:
D14/114