CA138030A - Ecr n a ventilation - Google Patents

Ecr n a ventilation

Info

Publication number
CA138030A
CA138030A CA000138030A CA138030DA CA138030A CA 138030 A CA138030 A CA 138030A CA 000138030 A CA000138030 A CA 000138030A CA 138030D A CA138030D A CA 138030DA CA 138030 A CA138030 A CA 138030A
Authority
CA
Canada
Prior art keywords
ventilating screen
ventilating
screen
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
CA000138030A
Other languages
English (en)
Inventor
Lewis A. Karlson
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
Application granted granted Critical
Publication of CA138030A publication Critical patent/CA138030A/fr
Expired legal-status Critical Current

Links

CA000138030A 1911-10-27 1911-10-27 Ecr n a ventilation Expired CA138030A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA138030T 1911-10-27

Publications (1)

Publication Number Publication Date
CA138030A true CA138030A (fr) 1912-01-23

Family

ID=45257746

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000138030A Expired CA138030A (fr) 1911-10-27 1911-10-27 Ecr n a ventilation

Country Status (1)

Country Link
CA (1) CA138030A (fr)

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