USD253721SExpiredUtility

Moisture and heat exchanger for respiratory apparatus

Assignee: GIBECK AB LOUISPriority: Jan 28, 1977Filed: Jul 25, 1977Granted: Dec 18, 1979

Est. expiryJan 28, 1997(expired)· nominal 20-yr term from priority

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exact text as granted — not AI-modified

The ornamental design for moisture and heat exchanger for respiratory apparatus, as shown and described.

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