USD281713SExpiredUtility
Flapper flush valve for toilet tanks
Est. expiryFeb 7, 2003(expired)· nominal 20-yr term from priority
Inventors:Erwin F. Mikol
56
PatentIndex Score
6
Cited by
7
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for flapper flush valve for toilet tanks, substantially as shown and described.
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