USD451182SExpiredUtility
Air purifier
Est. expiryJan 22, 2021(expired)· nominal 20-yr term from priority
Inventors:Masao Tsuji
89
PatentIndex Score
38
Cited by
2
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for an air purifier, as shown and described.
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