CA962200A - Electret filter - Google Patents

Electret filter

Info

Publication number
CA962200A
CA962200A CA132,701A CA132701A CA962200A CA 962200 A CA962200 A CA 962200A CA 132701 A CA132701 A CA 132701A CA 962200 A CA962200 A CA 962200A
Authority
CA
Canada
Prior art keywords
electret filter
electret
filter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA132,701A
Other versions
CA132701S (en
Inventor
David M. Sanger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SPX Corp
Original Assignee
General Signal Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by General Signal Corp filed Critical General Signal Corp
Application granted granted Critical
Publication of CA962200A publication Critical patent/CA962200A/en
Expired legal-status Critical Current

Links

CA132,701A 1971-03-22 1972-01-18 Electret filter Expired CA962200A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12680571A 1971-03-22 1971-03-22

Publications (1)

Publication Number Publication Date
CA962200A true CA962200A (en) 1975-02-04

Family

ID=22426774

Family Applications (1)

Application Number Title Priority Date Filing Date
CA132,701A Expired CA962200A (en) 1971-03-22 1972-01-18 Electret filter

Country Status (1)

Country Link
CA (1) CA962200A (en)

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