Mechanically operable acoustic filter

Membrane type electro-acoustic transducer

Method and device for utilization of a stethoscope as a...

Method and device for utilization of a stethoscope as a...

Method and device for utilization of a stethoscope as a...

Method and devices for the omnidirectional radiation of sound wa

Method for manufacturing an ear device and ear device

Method for manufacturing an ear device and ear device

Method for manufacturing an ear device and ear device

Method for manufacturing an ear device and ear device

Method for manufacturing an ear device and ear device

Method for retaining a hearing aid in place and hearing aid harn

Method of manufacturing an in-the-ear hearing aid, auxiliary too

Method of producing and making use of ear tips having a...

Microphone assembly

Microphone holding device

Minimal contact replaceable acoustic coupler

Modular furniture structure

Molded article having elastomeric mold member used therewith

Molded foam earplug and method for making same