USD344586SExpiredUtility

Respiratory filter machine to reduce airborne disease transmission of a patient

27
Individually held — no corporate assignee on recordPriority: Apr 3, 1991Filed: Apr 3, 1991Granted: Feb 22, 1994
Est. expiryApr 3, 2011(expired)· nominal 20-yr term from priority
Inventors:Thomas V. Choate
27
PatentIndex Score
1
Cited by
7
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a respiratory filter machine to reduce airborne disease transmission of a patient, as shown and described.

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