CA962200A - Electret filter - Google Patents
Electret filterInfo
- 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
Links
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) |
-
1972
- 1972-01-18 CA CA132,701A patent/CA962200A/en not_active Expired
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