NO120589B - - Google Patents

Info

Publication number

NO120589B

NO120589B NO16525666A NO16525666A NO120589B NO 120589 B NO120589 B NO 120589B NO 16525666 A NO16525666 A NO 16525666A NO 16525666 A NO16525666 A NO 16525666A NO 120589 B NO120589 B NO 120589B

Authority

NO

Norway

Prior art keywords

electret

forming material

layer

electrets

metallized

Prior art date

1965-10-23

Links

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