Magnetically controlled exhalation valve
Man-rated fire suppression system
Manoeuvrable boom attachment apparatus
Manual resuscitators
Manually adjustable nasal cavity dilator
Mask
Mask
Mask assembly
Mask device with blower
Mask exhalation valve
Mask for breathing apparatus
Mask for breathing apparatus
Mask for disguising or counteracting odors
Mask having interchangeable scenting means
Mask maintaining warmth in nasal area
Mask maintaining warmth in nasal area
Mask with improved cushion and method of using same
Mask with means for passing out the expiration of air
Masks and their manufacture
Mechanical activator for contactor