Matches 51 - 65 out of 65 < 1 2
Match Document Document Title
3916873 Valve for tympanic membrane ear surgery  
An air-permeable, chemically inert valve used to provide an air passage through the tympanic membrane of the ear. A thin layer of porous teflon covers the outer end of a tube lining a passageway...
3565069 ACOUSTICAL FILTER DEVICE  
An acoustical filter device characterized by a filter element serving to screen out substantially all noise about a predetermined level while permitting sound below such level to pass therethrough...
3394698 Ear noise suppressor and speech clarifier  
3271520 Acoustic reflex ear protective system  
3197577 Wax retarder baffle for hearing aids  
3160717 Ear protectors  
3148376 Support for head engaging device  
3097643 Ear-plugs  
3073410 Headset  
2989598 Hard shell liquid seal earmuff with isolated inner close coupling ear shell  
2858544 Noise attenuating device  
2844820 Noise protective device  
2785675 Ear protecting devices  
2785676 Ear protecting device  
0931768 Title is not available  
Matches 51 - 65 out of 65 < 1 2