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FIG. 1 is a top perspective view of a computer trackball showing our new design;
FIG. 2 is a side perspective view thereof;
FIG. 3 is a right side elevational view thereof on an enlarged scale;
FIG. 4 is a bottom plan view thereof; and,
FIG. 5 is a rear elevational view thereof.
The partial broken line drawings of a cord in FIG. 1 and the keyboard in FIG. 2 are for illustrative purposes only and form no part of the claimed design.
Filed: Dec 23, 1992
Date of Patent: Jun 7, 1994
Assignee: Microsoft Corporation (Redmond, WA)
Inventors: Stuart Ashmun (Seattle, WA), Charlie Garthwaite (Kirkland, WA), Bridget Cameron (Seattle, WA), Paul Bradley (Woodside, CA), James R. Yurchenco (Palo Alto, CA), Elinor J. Fulton (Kensington, CA)
Primary Examiner: Wallace R. Burke
Assistant Examiner: M. H. Tung
Law Firm: Seed and Berry
Application Number: 0/2,935