USD494551SExpiredUtility
Exhaust ring for manufacturing semiconductors
Est. expiryDec 12, 2022(expired)· nominal 20-yr term from priority
Inventors:Shigeki Doba
75
PatentIndex Score
23
Cited by
9
References
1
Claims
Claims
exact text as granted — not AI-modifiedI claim the ornamental design for exhaust ring for manufacturing semiconductors, as shown and described.
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