USD307748SExpiredUtility

Keyboard

70
Assignee: AMERICAN TELEPHONE & TELEGRAPH COMPANYPriority: Oct 7, 1987Filed: Oct 7, 1987Granted: May 8, 1990
Est. expiryOct 7, 2007(expired)· nominal 20-yr term from priority
Inventors:Ramon M. CardonaDavid G. GeisFrancis E. HuntoonChris G. JohnsonKenneth F. LewinskiRaymond R. SeidlitzEugene K. Sokolowski
70
PatentIndex Score
14
Cited by
12
References
1
Claims

Claims

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

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