USD302313SExpiredUtility
Erosion control device
Individually held — no corporate assignee on recordPriority: May 27, 1986Filed: Nov 28, 1986Granted: Jul 18, 1989
Est. expiryMay 27, 2006(expired)· nominal 20-yr term from priority
Inventors:Walter J. Lenson
65
PatentIndex Score
13
Cited by
36
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for an erosion control device, as shown.
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