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CA628249A - Mask for breathing apparatus - Google Patents

Mask for breathing apparatus

Info

Publication number
CA628249A
CA628249A CA628249A CA628249DA CA628249A CA 628249 A CA628249 A CA 628249A CA 628249 A CA628249 A CA 628249A CA 628249D A CA628249D A CA 628249DA CA 628249 A CA628249 A CA 628249A
Authority
CA
Canada
Prior art keywords
mask
breathing apparatus
breathing
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
CA628249A
Inventor
W. Austin Harry
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.)
MSA Safety Inc
Original Assignee
Mine Safety Appliances Co
Publication date
Application granted granted Critical
Publication of CA628249A publication Critical patent/CA628249A/en
Expired legal-status Critical Current

Links

CA628249A Mask for breathing apparatus Expired CA628249A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA628249T

Publications (1)

Publication Number Publication Date
CA628249A true CA628249A (en) 1961-09-26

Family

ID=35884378

Family Applications (1)

Application Number Title Priority Date Filing Date
CA628249A Expired CA628249A (en) Mask for breathing apparatus

Country Status (1)

Country Link
CA (1) CA628249A (en)

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