Speaker edge

Details Speaker edge Speaker edge

1975-05-23

1976-09-14

Brown, Thomas W.

Acoustics

Anatomic or prosthetic relation

Ear and mouth

181172, H04R 712

Patent

active

039808416

ABSTRACT:
An acoustic material suitable for use as a speaker edge comprises an expanded plastic and minute collagen fibers wherein the content of the collagen fibers is 15 - 40% based on the weight of the expanded plastic and the length of the fibers is equal to or less than 1 mm.

REFERENCES:
patent: 3858680 (1975-01-01), Tsuge et al.
patent: 3905448 (1975-09-01), Kawakami et al.

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