Trackball for a computer Patent Grant Sacherman March 19, 1 [Curtis Manufacturing Company, Inc.]

Trackball for a computer

Sacherman March 19, 1

Patent Grant D315552

U.S. patent number D315,552 [Application Number 07/455,739] was granted by the patent office on 1991-03-19 for trackball for a computer. This patent grant is currently assigned to Curtis Manufacturing Company, Inc.. Invention is credited to James E. Sacherman.

United States Patent	D315,552
Sacherman	March 19, 1991

Trackball for a computer

Claims

The ornamental design for a trackball for a computer, as shown and described.

Inventors:	Sacherman; James E. (Palo Alto, CA)
Assignee:	Curtis Manufacturing Company, Inc. (Jaffrey, NH)
Appl. No.:	07/455,739
Filed:	December 22, 1989

Current U.S. Class:	D14/417
Field of Search:	;D14/100,114,106 ;D13/158 ;D21/48 ;178/18,19 ;200/5A,5R,6A,6R ;273/148B ;340/707,710 ;74/471XY

References Cited [Referenced By]

U.S. Patent Documents


D288930	March 1987	Barbera et al.
D291318	August 1987	Kim
D292600	November 1987	Wagner
D302010	July 1989	McLaughlin et al.

Primary Examiner: Burke; Wallace R.
Assistant Examiner: Nunn; Freda S.
Attorney, Agent or Firm: Crowley; Richard P.

Description

FIG. 1 is a top, front, right side perspective view of a trackball for a computer showing my new design;

FIG. 2 is a top plan view thereof on a greatly enlarged scale;

FIG. 3 is a right side elevational view thereof, the left side elevational view being a mirror image;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a rear elevational view thereof.

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