USD579552SExpiredUtility
Portion of an anti-asphyxia valve for a respiratory mask
Est. expiryJan 12, 2026(expired)· nominal 20-yr term from priority
90
PatentIndex Score
36
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6
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1
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The ornamental design for a portion of an anti-asphyxia valve for a respiratory mask as shown and described.Cited by (0)
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