CA764840A - Tunnel boring machines - Google Patents

Tunnel boring machines

Info

Publication number
CA764840A
CA764840A CA764840A CA764840DA CA764840A CA 764840 A CA764840 A CA 764840A CA 764840 A CA764840 A CA 764840A CA 764840D A CA764840D A CA 764840DA CA 764840 A CA764840 A CA 764840A
Authority
CA
Canada
Prior art keywords
tunnel boring
boring machines
machines
tunnel
boring
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
CA764840A
Inventor
D. Pirrie Norman
Bland John
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.)
Economic Foundations Ltd
Original Assignee
Economic Foundations Ltd
Publication date
Application granted granted Critical
Publication of CA764840A publication Critical patent/CA764840A/en
Expired legal-status Critical Current

Links

CA764840A Tunnel boring machines Expired CA764840A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA764840T

Publications (1)

Publication Number Publication Date
CA764840A true CA764840A (en) 1967-08-08

Family

ID=36208254

Family Applications (1)

Application Number Title Priority Date Filing Date
CA764840A Expired CA764840A (en) Tunnel boring machines

Country Status (1)

Country Link
CA (1) CA764840A (en)

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