GB171720A - Improvements in face masks - Google Patents

Improvements in face masks

Info

Publication number
GB171720A
GB171720A GB1436820A GB1436820A GB171720A GB 171720 A GB171720 A GB 171720A GB 1436820 A GB1436820 A GB 1436820A GB 1436820 A GB1436820 A GB 1436820A GB 171720 A GB171720 A GB 171720A
Authority
GB
United Kingdom
Prior art keywords
face masks
masks
face
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
GB1436820A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 by Individual filed Critical Individual
Priority to GB1436820A priority Critical patent/GB171720A/en
Publication of GB171720A publication Critical patent/GB171720A/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

Landscapes

  • Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
GB1436820A 1920-05-26 1920-05-26 Improvements in face masks Expired GB171720A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1436820A GB171720A (en) 1920-05-26 1920-05-26 Improvements in face masks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1436820A GB171720A (en) 1920-05-26 1920-05-26 Improvements in face masks

Publications (1)

Publication Number Publication Date
GB171720A true GB171720A (en) 1921-11-28

Family

ID=10039944

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1436820A Expired GB171720A (en) 1920-05-26 1920-05-26 Improvements in face masks

Country Status (1)

Country Link
GB (1) GB171720A (en)

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