USD375558SExpiredUtility
End coupler for fume exhaust ducts
Est. expiryJun 7, 2015(expired)· nominal 20-yr term from priority
Inventors:Douglas Williams
53
PatentIndex Score
9
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1
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Claims
exact text as granted — not AI-modifiedThe ornamental design for an end coupler for fume exhaust ducts, as shown and described.
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