CA449456A - Air mask - Google Patents

Air mask

Info

Publication number
CA449456A
CA449456A CA449456A CA449456DA CA449456A CA 449456 A CA449456 A CA 449456A CA 449456 A CA449456 A CA 449456A CA 449456D A CA449456D A CA 449456DA CA 449456 A CA449456 A CA 449456A
Authority
CA
Canada
Prior art keywords
air mask
mask
air
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
CA449456A
Other languages
French (fr)
Inventor
D. Sullivan William
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
Publication date
Application granted granted Critical
Publication of CA449456A publication Critical patent/CA449456A/en
Expired legal-status Critical Current

Links

CA449456A Air mask Expired CA449456A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA449456T

Publications (1)

Publication Number Publication Date
CA449456A true CA449456A (en) 1948-06-29

Family

ID=35567164

Family Applications (1)

Application Number Title Priority Date Filing Date
CA449456A Expired CA449456A (en) Air mask

Country Status (1)

Country Link
CA (1) CA449456A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3168748A (en) * 1961-06-08 1965-02-09 Limberg Wayne Hat with power cooling
US3231897A (en) * 1963-04-16 1966-02-01 Sr Martin Y Woolfolk Goggle construction
US3535707A (en) * 1969-03-03 1970-10-27 Trison Corp Welding helmet and the like
US3629868A (en) * 1970-07-21 1971-12-28 Trison Corp Adapter assembly for a welding helmet or the like
USRE33286E (en) * 1973-08-13 1990-08-07 Personal air conditioner
US5220699A (en) * 1992-07-27 1993-06-22 Farris R David Surgical face mask support apparatus and method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3168748A (en) * 1961-06-08 1965-02-09 Limberg Wayne Hat with power cooling
US3231897A (en) * 1963-04-16 1966-02-01 Sr Martin Y Woolfolk Goggle construction
US3535707A (en) * 1969-03-03 1970-10-27 Trison Corp Welding helmet and the like
US3629868A (en) * 1970-07-21 1971-12-28 Trison Corp Adapter assembly for a welding helmet or the like
USRE33286E (en) * 1973-08-13 1990-08-07 Personal air conditioner
US5220699A (en) * 1992-07-27 1993-06-22 Farris R David Surgical face mask support apparatus and method

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