USD456574SExpiredUtility

Pipe plunger

87
Priority: Jun 4, 2001Filed: Jun 4, 2001Granted: Apr 30, 2002
Est. expiryJun 4, 2021(expired)· nominal 20-yr term from priority
Inventors:Kun-Chen Chen
87
PatentIndex Score
33
Cited by
4
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a pipe plunger, as shown.

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