USD261399SExpiredUtility

Black jack slide rule

31
Assignee: WAGNER ROBERT GPriority: Oct 15, 1979Filed: Oct 15, 1979Granted: Oct 20, 1981
Est. expiryOct 15, 1999(expired)· nominal 20-yr term from priority
Inventors:Robert Wagner
31
PatentIndex Score
1
Cited by
5
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a black jack slide rule, as shown and described.

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