CA188344A - Methode de percement de tunnels - Google Patents

Methode de percement de tunnels

Info

Publication number
CA188344A
CA188344A CA000188344A CA188344DA CA188344A CA 188344 A CA188344 A CA 188344A CA 000188344 A CA000188344 A CA 000188344A CA 188344D A CA188344D A CA 188344DA CA 188344 A CA188344 A CA 188344A
Authority
CA
Canada
Prior art keywords
tunnelling method
tunnelling
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
CA000188344A
Other languages
English (en)
Inventor
John F. O'rourke
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 CA188344A publication Critical patent/CA188344A/fr
Expired legal-status Critical Current

Links

CA000188344A 1918-11-18 1918-11-18 Methode de percement de tunnels Expired CA188344A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA188344T 1918-11-18

Publications (1)

Publication Number Publication Date
CA188344A true CA188344A (fr) 1919-01-21

Family

ID=45307995

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000188344A Expired CA188344A (fr) 1918-11-18 1918-11-18 Methode de percement de tunnels

Country Status (1)

Country Link
CA (1) CA188344A (fr)

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