CA797097A - Tunnel boring machines - Google Patents

Tunnel boring machines

Info

Publication number
CA797097A
CA797097A CA797097A CA797097DA CA797097A CA 797097 A CA797097 A CA 797097A CA 797097 A CA797097 A CA 797097A CA 797097D A CA797097D A CA 797097DA CA 797097 A CA797097 A CA 797097A
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
CA797097A
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 CA797097A publication Critical patent/CA797097A/en
Expired legal-status Critical Current

Links

CA797097A Tunnel boring machines Expired CA797097A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA797097T

Publications (1)

Publication Number Publication Date
CA797097A true CA797097A (en) 1968-10-22

Family

ID=36265096

Family Applications (1)

Application Number Title Priority Date Filing Date
CA797097A Expired CA797097A (en) Tunnel boring machines

Country Status (1)

Country Link
CA (1) CA797097A (en)

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