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Ball-operated control device for electronic circuits
D340696 Ball-operated control device for electronic circuits
Patent Drawings:Drawing: D340696-2    
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(1 images)

Inventor: Barrett
Date Issued: October 26, 1993
Application: 07/792,059
Filed: November 13, 1991
Inventors: Barrett; John B. (Paso Robles, CA)
Assignee: Appoint (Paso Robles, CA)
Primary Examiner: Burke; Wallace R.
Assistant Examiner: Sincavage; J.
Attorney Or Agent: Skjerven, Morrill, MacPherson, Franklin & Friel
U.S. Class: D13/158; D14/417
Field Of Search: D13/158; D14/107; D14/114; D21/141.1; 200/DIG.29; 370/709; 370/710; 250/221
International Class:
U.S Patent Documents: D272921; 1249068; 3643148; 5078019
Foreign Patent Documents: 0000261
Other References: Trackball controls on p. 17 of Measurement Systems, Inc. catalog C584, Oct. 18, 1984..
Trackball controls on p. 18 of Measurement Systems, Inc. catalog C584, Oct. 18, 1984..









Abstract:
Claim: The ornamental design for a ball-operated control device for electronic circuits, as shown and described.
Description: FIG. 1 is a perspective view of a ball-operated control device for electronic circuits showing my new design;

FIG. 2 is a top plan view of the device;

FIG. 3 is a bottom plan view of the device;

FIG. 4 is a side elevational view of the device;

FIG. 5 is a front elevational view of the device; and,

FIG. 6 is a rear elevational view of the device.

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