USD281350SExpiredUtility

Thread protector for pipes

80
Individually held — no corporate assignee on recordPriority: Sep 17, 1982Filed: Sep 17, 1982Granted: Nov 12, 1985
Est. expirySep 17, 2002(expired)· nominal 20-yr term from priority
Inventors:Richard L. Heier
80
PatentIndex Score
37
Cited by
8
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a thread protector for pipes, as shown and described.

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