USD387043SExpiredUtility

Track ball

49
Assignee: SYSGRATION LTDPriority: Jul 25, 1996Filed: Jul 25, 1996Granted: Dec 2, 1997
Est. expiryJul 25, 2016(expired)· nominal 20-yr term from priority
Inventors:Fu Chin Cheng
49
PatentIndex Score
7
Cited by
3
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a track ball, as shown and described.

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