Passive personal vocal monitor
Passive sound gathering apparatus
Patient-to-transducer interface device
Peripherally reinforced laminated loudspeaker diaphragm
Permeable aerodam to reduce wind noise
Personal protective devices having an energy activated material
Piston loudspeaker
Piston-diaphragm speaker
Pivoted loudspeaker enclosure with visual indicator of optimum l
Planar sound reproducing speaker system
Planar type electro-acoustic transducer and process for manufact
Plane speaker
Plexiglas speakers
Plug for miniature receiver
Plug-type hearing device
Pneumatic headset
Portable acoustic hearing enhancement device
Practical stethoscope cover and dispenser therefor
Pre-cordial stethoscope cover
Pressure recording process and device