USD319759SExpiredUtility
Tool for use in plugging a cylindrical pipe
Individually held — no corporate assignee on recordPriority: Apr 25, 1988Filed: Apr 25, 1988Granted: Sep 10, 1991
Est. expiryApr 25, 2008(expired)· nominal 20-yr term from priority
Inventors:Timothy H. Bookout
61
PatentIndex Score
17
Cited by
6
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a tool for use in plugging a cylindrical pipe, as shown and described.
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