Title:
METHOD OF MAKING CUSTOM-FITTED EARPLUGS FOR HEARING AIDS
United States Patent 3440314

Inventors:
Frisch, Eldon E.
Publication Date:
04/22/1969
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Assignee:
Dow, Corning
Primary Class:
264/222
Other Classes:
181/130, 381/322, 128/864, 381/328
International Classes:
A61F11/00; H04R25/00; B28B7/16; B28B7/28; A61F11/00




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