Computer trackball

- Microsoft

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.

Referenced Cited
U.S. Patent Documents
D326261 May 19, 1992 Ashmun et al.
D328458 August 4, 1992 Barry
4952919 August 28, 1990 Nippoldt
Patent History
Patent number: D347628
Type: Grant
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
Current U.S. Class: D14/114