Track ball
Melzer , et al. August 31, 1
U.S. patent number D338,883 [Application Number 07/770,284] was granted by the patent office on 1993-08-31 for track ball. This patent grant is currently assigned to Logitech, Inc.. Invention is credited to Daniel Harden, Tino Melzer.
| United States Patent | D338,883 |
| Melzer , et al. | August 31, 1993 |
Track ball
Claims
The ornamental design for a track ball, as shown and described.
| Inventors: | Melzer; Tino (San Francisco, CA), Harden; Daniel (Altnau, CH) |
|---|---|
| Assignee: | Logitech, Inc. (Fremont,
CA) |
| Appl. No.: | 07/770,284 |
| Filed: | October 1, 1991 |
| Current U.S. Class: | D14/402 |
| Field of Search: | ;D14/114,116 ;D13/158 ;D21/48 ;200/5R,5A,6R,6A ;273/148B ;340/707,709-710 ;74/471XY |
References Cited [Referenced By]
U.S. Patent Documents
| D272921 | March 1984 | Kim |
| D291318 | August 1987 | Kim |
| D302426 | July 1989 | Bradley et al. |
| D315552 | March 1991 | Saeherman |
| D326261 | May 1992 | Ashmun et al. |
| 4952919 | August 1990 | Nippoldt |
Other References
|
Softwarehouse Catalog item Mouse Systems.RTM. Trackball, p. 29, Winter '89-'90.. |
Primary Examiner: Burke; Wallace R.
Assistant Examiner: Tung; M. H.
Attorney, Agent or Firm: Townsend and Townsend Khourie and Crew
Description
FIG. 1 is a bottom perspective view of a track ball showing our new design;
FIG. 2 is a left side elevational view thereof;
FIG. 3 is a right side elevational view thereof;
FIG. 4 is a top plan view thereof;
FIG. 5 is a bottom plan view thereof;
FIG. 6 is a front elevational view thereof; and,
FIG. 7 is a rear elevational view thereof.
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