GB509582A - Improvements in or relating to filters for aerosols - Google Patents

Improvements in or relating to filters for aerosols

Info

Publication number
GB509582A
GB509582A GB37778/38A GB3777838A GB509582A GB 509582 A GB509582 A GB 509582A GB 37778/38 A GB37778/38 A GB 37778/38A GB 3777838 A GB3777838 A GB 3777838A GB 509582 A GB509582 A GB 509582A
Authority
GB
United Kingdom
Prior art keywords
aerosols
filters
relating
pleats
soc
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
GB37778/38A
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.)
Pirelli and C SpA
Original Assignee
Pirelli SpA
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 Pirelli SpA filed Critical Pirelli SpA
Publication of GB509582A publication Critical patent/GB509582A/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)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)

Abstract

509,582. Air filters. SOC. ITALIANA PIRELLI. Dec. 29, 1938, No. 37778. Convention date, Jan. 28. [Class 8 (ii)] A filter for aerosols comprises a sheet of paper &c. formed with pleats which are gathered together at the ends and loose in the middle, the periphery being secured to a rigid frame 3, which may be formed in two parts by rubberized fabric &c.
GB37778/38A 1938-01-28 1938-12-29 Improvements in or relating to filters for aerosols Expired GB509582A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT847651X 1938-01-28

Publications (1)

Publication Number Publication Date
GB509582A true GB509582A (en) 1939-07-18

Family

ID=11325370

Family Applications (1)

Application Number Title Priority Date Filing Date
GB37778/38A Expired GB509582A (en) 1938-01-28 1938-12-29 Improvements in or relating to filters for aerosols

Country Status (2)

Country Link
FR (1) FR847651A (en)
GB (1) GB509582A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3296781A (en) * 1964-11-10 1967-01-10 Auergesellschaft Gmbh Filter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3296781A (en) * 1964-11-10 1967-01-10 Auergesellschaft Gmbh Filter

Also Published As

Publication number Publication date
FR847651A (en) 1939-10-13

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