USD308855SExpiredUtility

Program function keyboard

Assignee: IBMPriority: Apr 23, 1987Filed: Apr 23, 1987Granted: Jun 26, 1990
Est. expiryApr 23, 2007(expired)· nominal 20-yr term from priority
Inventors:David L. Schaum
82
PatentIndex Score
21
Cited by
6
References
1
Claims

Claims

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

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