Underwater exhaust system

Surgery – Respiratory method or device – Including body or head supported means covering user's scalp

Reexamination Certificate

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Details

C128S204260, C128S201110, C128S201120, C128S201150, C128S201280, C128S204270, C128S205240, C128S206290, C128S201260, C405S186000, C405S187000

Reexamination Certificate

active

06983746

ABSTRACT:
Provided are exemplary embodiments of an underwater breathing exhaust system configured to lower the exhalation, effort and to direct water adjacent an exhaust valve to reduce the likelihood of water entering the system and/or gas free flowing from the system.

REFERENCES:
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patent: 4872453 (1989-10-01), Christianson
patent: 4877022 (1989-10-01), Christianson
patent: 4884564 (1989-12-01), Lamont
patent: 5251618 (1993-10-01), Christianson
patent: 5657746 (1997-08-01), Christianson
patent: 5868129 (1999-02-01), Christianson
patent: 6119685 (2000-09-01), Kawashima et al.
patent: 6129081 (2000-10-01), Wu
patent: 6516797 (2003-02-01), Chen-Lieh

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