USD256252SExpiredUtility

Keyboard

41
Assignee: ESSEX TRANSDUCERSPriority: Dec 13, 1978Filed: Dec 13, 1978Granted: Aug 5, 1980
Est. expiryDec 13, 1998(expired)· nominal 20-yr term from priority
Inventors:Michael D. Burridge
41
PatentIndex Score
3
Cited by
5
References
1
Claims

Claims

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

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