FR643941A - Filter for respiratory masks - Google Patents

Filter for respiratory masks

Info

Publication number
FR643941A
FR643941A FR643941DA FR643941A FR 643941 A FR643941 A FR 643941A FR 643941D A FR643941D A FR 643941DA FR 643941 A FR643941 A FR 643941A
Authority
FR
France
Prior art keywords
filter
respiratory masks
masks
respiratory
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
Francois-Emile Spengler
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 FR643941A publication Critical patent/FR643941A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B23/00—Filters for breathing-protection purposes

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
FR643941D 1927-04-19 1927-04-19 Filter for respiratory masks Expired FR643941A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR643941T 1927-04-19

Publications (1)

Publication Number Publication Date
FR643941A true FR643941A (en) 1928-09-25

Family

ID=8999808

Family Applications (1)

Application Number Title Priority Date Filing Date
FR643941D Expired FR643941A (en) 1927-04-19 1927-04-19 Filter for respiratory masks

Country Status (1)

Country Link
FR (1) FR643941A (en)

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