Patent
   D342241
Priority
Oct 22 1990
Filed
Mar 08 1991
Issued
Dec 14 1993
Expiry
Dec 14 2007
Assg.orig
Entity
unknown
9
47
n/a
The ornamental design for a computer trackball, as shown and described.

FIG. 1 is a rear isometric view of a computer trackball showing our new design;

FIG. 2 is a bottom isometric view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a right side elevational view thereof in the tilted orientation;

FIG. 7 is a rear elevational view thereof; and,

FIG. 8 is a front elevational view thereof.

The broken line drawing of an electrical cord in FIGS. 2 and 4 is for illustrative purposes only and forms no part of the claimed design.

Nelson, Michael D., Bradley, Paul, Yurchenco, James R., Paull, Mike M., Ashmun, Stuart, Garthwaite, Charlie, Cameron, Bridget, Stephan, Allan H., Fulton, Elinor J.

Patent Priority Assignee Title
D349492, Jun 04 1992 Clamp for fastening a trackball to a computer keyboard
D350344, Oct 13 1992 International Business Machines Corp Computer pointing device
D356788, Jun 30 1993 Sharp Kabushiki Kaisha Cursor control for computer display
D361760, Dec 17 1993 Lite-On Technology Corporation Trackball
D361991, Sep 04 1992 Combined trackball and mouse
D371350, Jan 23 1995 Computer mouse
D375300, Jul 07 1995 Pointer
D448377, May 13 1999 Sony Corporation Dial portion of a computer
D487462, May 13 1999 Sony Corporation Dial portion of a computer
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GB1526428,
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Mar 08 1991Microsoft Corporation(assignment on the face of the patent)
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