USD305152SExpiredUtility
Revolving door
Individually held — no corporate assignee on recordPriority: Apr 30, 1986Filed: Apr 30, 1986Granted: Dec 19, 1989
Est. expiryApr 30, 2006(expired)· nominal 20-yr term from priority
Inventors:Bok Kwon Wang
31
PatentIndex Score
4
Cited by
2
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a revolving door, as shown and described.
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