USD360029SExpiredUtility
Air filter unit for use in respirators
Est. expiryApr 20, 2014(expired)· nominal 20-yr term from priority
Inventors:Yukio Yoshikawa
67
PatentIndex Score
13
Cited by
6
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for an air filter unit for use in respirators, as shown and described.
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