H - Electricity – 04 – R
Patent
H - Electricity
04
R
356/196, 349/69,
H04R 19/01 (2006.01) B05D 7/24 (2006.01) H01G 7/02 (2006.01)
Patent
CA 1141020
ABSTRACT OF THE DISCLOSURE This invention relates to devices having electrets. The invention provides the improvement wherein the electret of the device, comprises a film of a plasma polymerized dielectric material having a volumetric space charge, which is generally uniform in the space charge.
337980
Sapieha Slawomir W.
Wertheimer Michael R.
Mcfadden Fincham
Sapieha Slawomir W.
Wertheimer Michael R.
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