CA838338A - Filters containing electrets - Google Patents

Filters containing electrets

Info

Publication number
CA838338A
CA838338A CA838338A CA838338DA CA838338A CA 838338 A CA838338 A CA 838338A CA 838338 A CA838338 A CA 838338A CA 838338D A CA838338D A CA 838338DA CA 838338 A CA838338 A CA 838338A
Authority
CA
Canada
Prior art keywords
filters containing
electrets
containing electrets
filters
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
CA838338A
Inventor
M. Baxt Lawrence
R. Mcdowell John
L. Stewart Lawrence
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.)
Philip Morris USA Inc
Original Assignee
Philip Morris USA Inc
Publication date
Application granted granted Critical
Publication of CA838338A publication Critical patent/CA838338A/en
Expired legal-status Critical Current

Links

CA838338A Filters containing electrets Expired CA838338A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA838338T

Publications (1)

Publication Number Publication Date
CA838338A true CA838338A (en) 1970-03-31

Family

ID=36322534

Family Applications (1)

Application Number Title Priority Date Filing Date
CA838338A Expired CA838338A (en) Filters containing electrets

Country Status (1)

Country Link
CA (1) CA838338A (en)

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