FR542559A - Improvements to gas masks - Google Patents

Improvements to gas masks

Info

Publication number
FR542559A
FR542559A FR542559DA FR542559A FR 542559 A FR542559 A FR 542559A FR 542559D A FR542559D A FR 542559DA FR 542559 A FR542559 A FR 542559A
Authority
FR
France
Prior art keywords
gas masks
masks
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
Other languages
French (fr)
Inventor
Waldemar Kops
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Application granted granted Critical
Publication of FR542559A publication Critical patent/FR542559A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B18/00—Breathing masks or helmets, e.g. affording protection against chemical agents or for use at high altitudes or incorporating a pump or compressor for reducing the inhalation effort
    • A62B18/02—Masks

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Zoology (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
FR542559D 1921-10-20 1921-10-20 Improvements to gas masks Expired FR542559A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR542559T 1921-10-20

Publications (1)

Publication Number Publication Date
FR542559A true FR542559A (en) 1922-08-17

Family

ID=8930967

Family Applications (1)

Application Number Title Priority Date Filing Date
FR542559D Expired FR542559A (en) 1921-10-20 1921-10-20 Improvements to gas masks

Country Status (1)

Country Link
FR (1) FR542559A (en)

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