FR976720A - Respiratory System Improvements - Google Patents

Respiratory System Improvements

Info

Publication number
FR976720A
FR976720A FR976720DA FR976720A FR 976720 A FR976720 A FR 976720A FR 976720D A FR976720D A FR 976720DA FR 976720 A FR976720 A FR 976720A
Authority
FR
France
Prior art keywords
respiratory system
system improvements
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
Maurice Fernez
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 FR976720A publication Critical patent/FR976720A/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
    • A62B23/02—Filters for breathing-protection purposes for respirators

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
FR976720D 1948-10-14 1948-10-14 Respiratory System Improvements Expired FR976720A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR976720T 1948-10-14

Publications (1)

Publication Number Publication Date
FR976720A true FR976720A (en) 1951-03-21

Family

ID=9519039

Family Applications (1)

Application Number Title Priority Date Filing Date
FR976720D Expired FR976720A (en) 1948-10-14 1948-10-14 Respiratory System Improvements

Country Status (1)

Country Link
FR (1) FR976720A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2868196A (en) * 1953-07-27 1959-01-13 Drager Otto H Dust filter mask
US2951551A (en) * 1957-11-12 1960-09-06 Allan L West Air purifying canister

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2868196A (en) * 1953-07-27 1959-01-13 Drager Otto H Dust filter mask
US2951551A (en) * 1957-11-12 1960-09-06 Allan L West Air purifying canister

Similar Documents

Publication Publication Date Title
FR1010503A (en) Spring improvements
FR1000238A (en) Mop upgrades
FR1048542A (en) Respiratory System Improvements
FR976720A (en) Respiratory System Improvements
FR969129A (en) Dust collector-sorter
FR967004A (en) Carburetor improvements
FR58603E (en) Brake improvements
FR950339A (en) Respiratory System Improvements
FR987296A (en) Improvements to electromagnetic devices
FR976258A (en) Carburetor improvements
FR1011241A (en) Fuse improvements
FR976868A (en) Stool enhancements for cycles
FR1011189A (en) Faucet improvement
FR981727A (en) Catalyst improvements
FR988479A (en) Improvements to inhalers
FR981588A (en) Improvements to drawing devices
FR981388A (en) Thermostats improvement
FR1029500A (en) Respiratory system improvement
FR966440A (en) Motorcycle improvements
FR969660A (en) Powder improvements
FR965969A (en) Toy improvement
FR970729A (en) Improvements to laminating equipment
FR995900A (en) Brake improvements
FR990024A (en) Brake improvements
FR970615A (en) Brake improvements