USD257544SExpiredUtility
Poultry watering valve
Est. expiryMay 11, 1999(expired)· nominal 20-yr term from priority
Inventors:William H. Johnson
70
PatentIndex Score
9
Cited by
4
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a poultry watering valve, as shown.
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