Title:
Hearing aid
United States Patent 3170046
Inventors:
Leale, Leslie P.
Publication Date:
02/16/1965
Export Citation:
Click for automatic bibliography generation
Assignee:
EARMASTER INC
Primary Class:
381/328
Other Classes:
381/322, 381/323
International Classes:
H04R25/00; H04R25/02; H04R25/00; H04R25/02
View Patent Images:
Download PDF 3170046        PDF help
US Patent References:
2987584In-ear hearing aid
2967913Electronic intensifying ear-drum
2950357Electronic sound transmitting device
2930858Binaural hearing-aid device