Track ball
Yang March 9, 1
U.S. patent number D333,818 [Application Number 07/740,015] was granted by the patent office on 1993-03-09 for track ball. Invention is credited to Tso S. Yang.
| United States Patent | D333,818 |
| Yang | March 9, 1993 |
Track ball
Claims
The ornamental design for a track ball, as shown and described.
| Inventors: | Yang; Tso S. (Taipei, TW) |
|---|---|
| Appl. No.: | 07/740,015 |
| Filed: | August 2, 1991 |
| Current U.S. Class: | D14/417 |
| 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 |
| D289306 | April 1987 | Burnstein et al. |
| D326261 | May 1992 | Ashmun et al. |
| 4538476 | September 1985 | Lugue |
| 4952919 | August 1990 | Nippoldt |
Other References
|
Businessland Catalog item Kensington Turbo Mouse, p. 22, 1988.. |
Primary Examiner: Burke; Wallace R.
Assistant Examiner: Tung; M. H.
Attorney, Agent or Firm: Bacon & Thomas
Description
FIG. 1 is a front, top, right side perspective view of a track ball showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is an inverted rear elevational view thereof;
FIG. 4 is a top plan view thereof;
FIG. 5 is a bottom plan view thereof;
FIG. 6 is a left side elevational view thereof; and,
FIG. 7 is a right side elevational view thereof.
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