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US2005047620A1
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Hearing aid circuit reducing feedback
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US2002057817A1
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Hearing aid
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US2002001391A1
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Acoustic switch with electronic switching capability
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US6678386B2
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Programmable module
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US6690806B1
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Various directional/omni-directional hearing aid microphone and housing structures
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EP1017252A2
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Hearing aid system
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EP0984666A2
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Hearing aid microphone and housing
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Directional/omni-directional hearing aid microphone and housing
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US5818324A
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Wire coil potentiometer wiper
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Hearing aid controls operable with battery door
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US5784470A
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Battery door and faceplate arrangement for a completely in the canal hearing aid device
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US5500901A
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Frequency response adjusting device
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US5463692A
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Sandwich switch construction for a hearing aid
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Potentiometer retention mechanism and method of mounting
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US5001762A
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Miniature modular volume control and integrated circuit assembly for use with a hearing air
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EP0362217A4
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Output amplifier
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EP0355119A1
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Voltage regulator
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US4835833A
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Method of mounting a potentiometer
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US4649366A
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Trimmer control mounted in potentiometer knob
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US4636768A
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Compression connection for potentiometer leads
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