Track ball

- Canon
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Description

FIG. 1 is a front elevational view of a track ball showing our new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a left side elevational view thereof, the right side is a mirror image; and,

FIG. 6 is a perspective view thereof.

Referenced Cited
U.S. Patent Documents
D316253 April 16, 1991 Riddiford et al.
D332446 January 12, 1993 Lin
D336747 June 22, 1993 Chao
D340042 October 5, 1993 Copper et al.
D340706 October 26, 1993 Hu
Patent History
Patent number: D350736
Type: Grant
Filed: Jan 22, 1993
Date of Patent: Sep 20, 1994
Assignee: Canon Kabushiki Kaisha (Tokyo)
Inventors: Masaki Takahashi (Kawasaki), Yoshinori Inukai (Tokyo)
Primary Examiner: Wallace R. Burke
Assistant Examiner: M. H. Tung
Law Firm: Fitzpatrick, Cella, Harper & Scinto
Application Number: 8/3,952
Classifications
Current U.S. Class: D14/114