Computer trackball

- Microsoft
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Description

FIG. 1 is a top plan view of a computer trackball showing our new design;

FIG. 2 is a side perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof; and,

FIG. 7 is a rear elevational view thereof.

Referenced Cited
U.S. Patent Documents
D272921 March 6, 1984 Kim
D281776 December 17, 1985 Griffin
D288930 March 24, 1987 Barbera et al.
D289306 April 14, 1987 Burnstein et al.
D291318 August 11, 1987 Kim
D292600 November 3, 1987 Wagner
D300324 March 21, 1989 Akagi et al.
D302010 July 4, 1989 McLaughlin et al.
D302426 July 25, 1989 Bradley et al.
D307739 May 8, 1990 Grant
D309449 July 24, 1990 MacDonald et al.
D315552 March 19, 1991 Sacherman
D315896 April 2, 1991 Brown
3625083 December 1971 Bose
3987685 October 26, 1976 Opocensky
4404865 September 20, 1983 Kim
4538476 September 3, 1985 Luque
4799049 January 17, 1989 Avila
5008528 April 16, 1991 Duchon
Patent History
Patent number: D353370
Type: Grant
Filed: Mar 5, 1993
Date of Patent: Dec 13, 1994
Assignee: Microsoft Corporation (Redmond, WA)
Inventors: Stuart Ashmun (Seattle, WA), Charlie Garthwaite (Kirkland, WA), Bridget Cameron (Seattle, WA), Allan H. Stephan (Seattle, WA), Michael D. Nelson (Seattle, WA), Mike M. Paull (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: 0/2,937
Classifications
Current U.S. Class: D14/114