CA541235A - Masque a gaz - Google Patents

Masque a gaz

Info

Publication number
CA541235A
CA541235A CA541235A CA541235DA CA541235A CA 541235 A CA541235 A CA 541235A CA 541235 A CA541235 A CA 541235A CA 541235D A CA541235D A CA 541235DA CA 541235 A CA541235 A CA 541235A
Authority
CA
Canada
Prior art keywords
gas mask
mask
gas
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
CA541235A
Other languages
English (en)
Inventor
A. Green Daniel
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 CA541235A publication Critical patent/CA541235A/fr
Expired legal-status Critical Current

Links

CA541235A Masque a gaz Expired CA541235A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA541235T

Publications (1)

Publication Number Publication Date
CA541235A true CA541235A (fr) 1957-05-21

Family

ID=35698383

Family Applications (1)

Application Number Title Priority Date Filing Date
CA541235A Expired CA541235A (fr) Masque a gaz

Country Status (1)

Country Link
CA (1) CA541235A (fr)

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