USD319832SExpiredUtility
Concrete mixer
Individually held — no corporate assignee on recordPriority: Nov 24, 1989Filed: Nov 24, 1989Granted: Sep 10, 1991
Est. expiryNov 24, 2009(expired)· nominal 20-yr term from priority
Inventors:Robert H. Ross
68
PatentIndex Score
13
Cited by
7
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a concrete mixer, as shown and described.
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