CA989660A - Attachment for ventilating shafts or the like - Google Patents

Attachment for ventilating shafts or the like

Info

Publication number
CA989660A
CA989660A CA179,750A CA179750A CA989660A CA 989660 A CA989660 A CA 989660A CA 179750 A CA179750 A CA 179750A CA 989660 A CA989660 A CA 989660A
Authority
CA
Canada
Prior art keywords
attachment
ventilating shafts
ventilating
shafts
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
CA179,750A
Other versions
CA179750S (en
Inventor
Gerhard Schrade
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.)
ZIEHR EBERHARD
Original Assignee
ZIEHR EBERHARD
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 ZIEHR EBERHARD filed Critical ZIEHR EBERHARD
Priority to CA179,750A priority Critical patent/CA989660A/en
Application granted granted Critical
Publication of CA989660A publication Critical patent/CA989660A/en
Expired legal-status Critical Current

Links

CA179,750A 1973-08-28 1973-08-28 Attachment for ventilating shafts or the like Expired CA989660A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA179,750A CA989660A (en) 1973-08-28 1973-08-28 Attachment for ventilating shafts or the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA179,750A CA989660A (en) 1973-08-28 1973-08-28 Attachment for ventilating shafts or the like

Publications (1)

Publication Number Publication Date
CA989660A true CA989660A (en) 1976-05-25

Family

ID=4097672

Family Applications (1)

Application Number Title Priority Date Filing Date
CA179,750A Expired CA989660A (en) 1973-08-28 1973-08-28 Attachment for ventilating shafts or the like

Country Status (1)

Country Link
CA (1) CA989660A (en)

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