USD255864SExpiredUtility
Air-operated cleaner
Individually held — no corporate assignee on recordPriority: Aug 28, 1978Filed: Aug 28, 1978Granted: Jul 15, 1980
Est. expiryAug 28, 1998(expired)· nominal 20-yr term from priority
Inventors:Burton K. Bennett
73
PatentIndex Score
22
Cited by
5
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for an air-operated cleaner, as shown and described.
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