USD300273SExpiredUtility

Four way respiratory valve with dual balloon

Assignee: HANS RUDOLPH INCPriority: Mar 16, 1987Filed: Mar 16, 1987Granted: Mar 14, 1989

Est. expiryMar 16, 2007(expired)· nominal 20-yr term from priority

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exact text as granted — not AI-modified

The ornamental design for a four way respiratory valve with dual balloon, as shown and described.

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