Track ball
Description
FIG. 1 is a front, top, right side perspective view of a track ball showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is an inverted rear elevational view thereof;
FIG. 4 is a top plan view thereof;
FIG. 5 is a bottom plan view thereof;
FIG. 6 is a left side elevational view thereof; and,
FIG. 7 is a right side elevational view thereof.
Referenced Cited
Patent History
Patent number: D333818
Type: Grant
Filed: Aug 2, 1991
Date of Patent: Mar 9, 1993
Inventor: Tso S. Yang (Taipei)
Primary Examiner: Wallace R. Burke
Assistant Examiner: M. H. Tung
Law Firm: Bacon & Thomas
Application Number: 7/740,015
Type: Grant
Filed: Aug 2, 1991
Date of Patent: Mar 9, 1993
Inventor: Tso S. Yang (Taipei)
Primary Examiner: Wallace R. Burke
Assistant Examiner: M. H. Tung
Law Firm: Bacon & Thomas
Application Number: 7/740,015
Classifications
Current U.S. Class:
D14/114