FR794004A - Improvements to devices intended to protect humans against toxic gases - Google Patents

Improvements to devices intended to protect humans against toxic gases

Info

Publication number
FR794004A
FR794004A FR794004DA FR794004A FR 794004 A FR794004 A FR 794004A FR 794004D A FR794004D A FR 794004DA FR 794004 A FR794004 A FR 794004A
Authority
FR
France
Prior art keywords
toxic gases
devices intended
humans against
against toxic
protect humans
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
Alice Leigh-Smith
Harold Owen Wilson Richardson
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 FR794004A publication Critical patent/FR794004A/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
    • A62B18/006—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 with pumps for forced ventilation

Landscapes

  • Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
FR794004D 1934-07-17 1935-07-16 Improvements to devices intended to protect humans against toxic gases Expired FR794004A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB794004X 1934-07-17

Publications (1)

Publication Number Publication Date
FR794004A true FR794004A (en) 1936-02-06

Family

ID=10509305

Family Applications (1)

Application Number Title Priority Date Filing Date
FR794004D Expired FR794004A (en) 1934-07-17 1935-07-16 Improvements to devices intended to protect humans against toxic gases

Country Status (1)

Country Link
FR (1) FR794004A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5427090A (en) * 1993-10-25 1995-06-27 Hipskind; Donald W. Portable breathing apparatus for an enclosed space

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5427090A (en) * 1993-10-25 1995-06-27 Hipskind; Donald W. Portable breathing apparatus for an enclosed space

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