FR837068A - Physical filter and its manufacturing process - Google Patents

Physical filter and its manufacturing process

Info

Publication number
FR837068A
FR837068A FR837068DA FR837068A FR 837068 A FR837068 A FR 837068A FR 837068D A FR837068D A FR 837068DA FR 837068 A FR837068 A FR 837068A
Authority
FR
France
Prior art keywords
manufacturing process
physical filter
physical
filter
manufacturing
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
Fernez Andre
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 FR837068A publication Critical patent/FR837068A/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)
FR837068D 1937-10-14 1937-10-14 Physical filter and its manufacturing process Expired FR837068A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR837068T 1937-10-14

Publications (1)

Publication Number Publication Date
FR837068A true FR837068A (en) 1939-02-02

Family

ID=9298403

Family Applications (1)

Application Number Title Priority Date Filing Date
FR837068D Expired FR837068A (en) 1937-10-14 1937-10-14 Physical filter and its manufacturing process

Country Status (1)

Country Link
FR (1) FR837068A (en)

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