ELECTRET EXCHANGE AND METHOD OF PRODUCING SAME - AMERICAN TELEPHONE & TELEGRAPH

Title:

ELECTRET EXCHANGE AND METHOD OF PRODUCING SAME

Document Type and Number:

Japanese Patent JPS59161999

Kind Code:

A

Abstract:

An electret microphone (10) comprises an electret diaphragm (11) having a thin metallic layer (13) deposited on one of its major surfaces. A ring-shaped metal washer (20) bonded to the metallic layer (13) of the diaphragm (11) by means of a lightly metal-filled adhesive (21).

More Like This:

JP5019997

Ultrasonic transducer, ultrasonic diagnostic equipment and ultrasonic microscope

Inventors:

FURANKU SHINKUREIAA POORASU JI
AISATSUKU CHIYUAAPOKU

Application Number:

JP3413984A

Publication Date:

September 12, 1984

Filing Date:

February 24, 1984

Export Citation:

Click for automatic bibliography generation Help

Assignee:

AMERICAN TELEPHONE & TELEGRAPH

International Classes:

H04R19/00; H04R19/01; H04R31/00; (IPC1-7): H04R19/01; H04R31/00

Domestic Patent References:

JP46035035A
JPS5221053U	1977-02-15

Attorney, Agent or Firm:

Masao Okabe

Previous Patent: JPS59161998

Next Patent: JPS59162000