Optical trackball

- Logitech Incorporated

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Description

FIG. 1 is a perspective view of an optical trackball showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front plan view thereof;

FIG. 4 is a left side plan view thereof;

FIG. 5 is a right side plan view thereof;

FIG. 6 is a rear plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D354746 January 24, 1995 Colani et al.
D386484 November 18, 1997 Jensen et al.
D390210 February 3, 1998 Bickford et al.
D396034 July 14, 1998 Whiteing
5576733 November 19, 1996 Lo
Patent History
Patent number: D410638
Type: Grant
Filed: May 8, 1998
Date of Patent: Jun 8, 1999
Assignee: Logitech Incorporated (Fremont, CA)
Inventors: Peter Sheehan (Bray), Cathal Loughnane (Dublin)
Primary Examiner: M. H. Tung
Law Firm: Townsend and Townsend and Crew LLP
Application Number: 0/87,783
Classifications
Current U.S. Class: D14/114
International Classification: 1402;