CA728462A - Filter face mask - Google Patents

Filter face mask

Info

Publication number
CA728462A
CA728462A CA728462A CA728462DA CA728462A CA 728462 A CA728462 A CA 728462A CA 728462 A CA728462 A CA 728462A CA 728462D A CA728462D A CA 728462DA CA 728462 A CA728462 A CA 728462A
Authority
CA
Canada
Prior art keywords
face mask
filter face
filter
mask
face
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
CA728462A
Inventor
Patrick H. Carey, Jr.
M. Westberg Walter
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.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
Publication date
Application granted granted Critical
Publication of CA728462A publication Critical patent/CA728462A/en
Expired legal-status Critical Current

Links

CA728462A Filter face mask Expired CA728462A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA728462T

Publications (1)

Publication Number Publication Date
CA728462A true CA728462A (en) 1966-02-22

Family

ID=36067379

Family Applications (1)

Application Number Title Priority Date Filing Date
CA728462A Expired CA728462A (en) Filter face mask

Country Status (1)

Country Link
CA (1) CA728462A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4536440A (en) * 1984-03-27 1985-08-20 Minnesota Mining And Manufacturing Company Molded fibrous filtration products

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4536440A (en) * 1984-03-27 1985-08-20 Minnesota Mining And Manufacturing Company Molded fibrous filtration products

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