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Publication numberUSD253721 S
Publication typeGrant
Application numberUS 05/818,729
Publication dateDec 18, 1979
Filing dateJul 25, 1977
Priority dateJan 28, 1977
Publication number05818729, 818729, US D253721 S, US D253721S, US-S-D253721, USD253721 S, USD253721S
InventorsSten G. Gibeck
Original AssigneeLouis Gibeck Ab
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Moisture and heat exchanger for respiratory apparatus
US D253721 S
Abstract  available in
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  1. The ornamental design for moisture and heat exchanger for respiratory apparatus, as shown and described.

FIG. 1 is a perspective view of a moisture and heat exchanger for respiratory apparatus showing my new design; and

FIG. 2 is a side elevation thereof.

Non-Patent Citations
1Anchor Coupling Co. Inc., catalog No. 404, 1963, p. 48, "O" Ring Weld Fitting.
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
USD757251Feb 4, 2015May 24, 2016The Lifeguard Store, Inc.Mask for artificial respiration aid
U.S. ClassificationD24/164, D24/162, D23/209, D24/110