USD342241SExpiredUtility

Computer trackball

58
Assignee: MICROSOFT CORPPriority: Mar 8, 1991Filed: Mar 8, 1991Granted: Dec 14, 1993
Est. expiryMar 8, 2011(expired)· nominal 20-yr term from priority
Inventors:Stuart AshmunCharlie GarthwaiteBridget CameronAllan H. StephanMichael D. NelsonMike M. PaullPaul E. BradleyJames R. YurchencoElinor J. Fulton
58
PatentIndex Score
9
Cited by
47
References
1
Claims

Claims

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

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