USD335658SExpiredUtility

Track ball for computer system cursor control

Assignee: Microspeed IncorporatedPriority: Oct 1, 1991Filed: Oct 1, 1991Granted: May 18, 1993

Est. expiryOct 1, 2011(expired)· nominal 20-yr term from priority

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exact text as granted — not AI-modified

The ornamental design for a track ball for computer system cursor control, as shown and described.

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