Track ball for computer system cursor control

- Microspeed Incorporated

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Description

FIG. 1 is a top plan view of a track ball showing my new design;

FIG. 2 is a side elevational view thereof the opposite side being a mirror image thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a front elevatioanl view thereof; and,

FIG. 5 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D272921 March 6, 1984 Kim
D291318 August 11, 1987 Kim
D302426 July 25, 1989 Bradley et al.
D315552 March 19, 1991 Sacherman
D326261 May 19, 1992 Ashmun et al.
4952919 August 28, 1990 Nippoldt
Other references
  • Softwarehouse catalog item Mouse Systems.RTM. trackball, p. 29, winter '89-'90.
Patent History
Patent number: D335658
Type: Grant
Filed: Oct 1, 1991
Date of Patent: May 18, 1993
Assignee: Microspeed Incorporated (Fremont, CA)
Inventor: Timothy C. Barry (Fremont, CA)
Primary Examiner: Wallace R. Burke
Assistant Examiner: M. H. Tung
Law Firm: Skjerven, Morrill, MacPherson, Franklin & Friel
Application Number: 7/770,282
Classifications
Current U.S. Class: D14/114