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US20070089737 Internal deflector for respiratory mask  
The “Internal Deflector for Respiratory Mask” is a one piece plastic deflector held in place by two adjustable mounting screws. It is designed to fit inside of a respiratory mask (cpap). The...
US20050061316 Air curtain device with flexible shield  
The device creates a shield around the nose and mouth of a user and a flow of air through the shield. The flow of air through the shield prevents airborne particles and chemicals from making...
Matches 1 - 2 out of 2