CA651930A - Ventilating tunnel - Google Patents

Ventilating tunnel

Info

Publication number
CA651930A
CA651930A CA651930A CA651930DA CA651930A CA 651930 A CA651930 A CA 651930A CA 651930 A CA651930 A CA 651930A CA 651930D A CA651930D A CA 651930DA CA 651930 A CA651930 A CA 651930A
Authority
CA
Canada
Prior art keywords
ventilating tunnel
ventilating
tunnel
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
CA651930A
Inventor
Collins Tappan
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.)
NATIONAL STEEL Corp
Original Assignee
NATIONAL STEEL Corp
Publication date
Application granted granted Critical
Publication of CA651930A publication Critical patent/CA651930A/en
Expired legal-status Critical Current

Links

CA651930A Ventilating tunnel Expired CA651930A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA651930T

Publications (1)

Publication Number Publication Date
CA651930A true CA651930A (en) 1962-11-06

Family

ID=35940570

Family Applications (1)

Application Number Title Priority Date Filing Date
CA651930A Expired CA651930A (en) Ventilating tunnel

Country Status (1)

Country Link
CA (1) CA651930A (en)

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