USD304971SExpiredUtility
Drain control knob
Est. expiryJul 11, 2008(expired)· nominal 20-yr term from priority
Inventors:Holly K. Yost
63
PatentIndex Score
9
Cited by
14
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a drain control knob, as shown and described.
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