USD316253SExpiredUtility

Electronic sensor pen

50
Individually held — no corporate assignee on recordPriority: Dec 22, 1987Filed: Jun 22, 1988Granted: Apr 16, 1991
Est. expiryDec 22, 2007(expired)· nominal 20-yr term from priority
Inventors:Martin RiddifordStephen O. FrazerSeamus A. Sharkey
50
PatentIndex Score
8
Cited by
4
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for an electronic sensor pen, as shown and described.

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