USD257290SExpiredUtility

Bong base

31
Individually held — no corporate assignee on recordPriority: Feb 13, 1978Filed: Feb 13, 1978Granted: Oct 7, 1980
Est. expiryFeb 13, 1998(expired)· nominal 20-yr term from priority
Inventors:William V. EricksonFred L. Miller
31
PatentIndex Score
2
Cited by
3
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a bong base, substantially as shown.

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