Track ball for computer system cursor control
Latest Microspeed Incorporated Patents:
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
Other references
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 |
- 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
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