H - Electricity – 04 – R
Patent
H - Electricity
04
R
349/28
H04R 25/02 (2006.01)
Patent
CA 1241428
ABSTRACT OF THE DISCLOSURE A hearing aid of the type which is worn behind the ear has a battery compartment and a volume control knob at its lower end. The compartment and knob are at right angles to the longitudinal axis of the device.
483975
Buttner Gerhard
Diefenbach Berndt
Aktiengesellschaft Siemens
Fetherstonhaugh & Co.
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