USD300274SExpiredUtility

Four way respiratory valve

59
Assignee: HANS RUDOLPH INCPriority: Mar 16, 1987Filed: Mar 16, 1987Granted: Mar 14, 1989
Est. expiryMar 16, 2007(expired)· nominal 20-yr term from priority
Inventors:Hans RudolphKevin A. Rudolph
59
PatentIndex Score
8
Cited by
7
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a four way respiratory valve, as shown and described.

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