Nose mask gas delivery device
Patent 4354488 Issued on October 19, 1982. Estimated Expiration Date: 
November 24, 2000. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
November 24, 2000. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2174523 2241535 2499650 2764152 2792000 2831487 2859748 2868199 3682171 Protective garment InventorAssigneeApplicationNo. 06/209784 filed on 11/24/1980US Classes:128/205.25, Face mask covering a breathing passage128/207.13Covering nose onlyExaminersPrimary: Recla, Henry J.Attorney, Agent or FirmInternational ClassA61M 16/06 (20060101)AbstractA nose mask for administering one or more gases such as oxygen to a human being comprises, in combination, (I) a shell having a front portion, a rear portion and a first opening comprising substantially the entire horizontal area beneath the wearer's nose and (II) a hollow gas delivery tube containing at least one gas delivering and dispersing means. The mask enables a wearer to breathe, eat and converse in a substantially normal fashion while efficiently providing the wearer with a cloud of gas (enriched in the gas or gases being delivered) directly beneath the nose and in front of the mouth of the wearer. The mask is particularly useful in long-term oxygen therapy applications.Other References
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