CA145239A - Tunnelling machine - Google Patents

Tunnelling machine

Info

Publication number
CA145239A
CA145239A CA000145239A CA145239DA CA145239A CA 145239 A CA145239 A CA 145239A CA 000145239 A CA000145239 A CA 000145239A CA 145239D A CA145239D A CA 145239DA CA 145239 A CA145239 A CA 145239A
Authority
CA
Canada
Prior art keywords
tunnelling machine
tunnelling
machine
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
CA000145239A
Other languages
French (fr)
Inventor
William R. Collins
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 CA145239A publication Critical patent/CA145239A/en
Expired legal-status Critical Current

Links

CA000145239A 1912-08-01 1912-08-01 Tunnelling machine Expired CA145239A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA145239T 1912-08-01

Publications (1)

Publication Number Publication Date
CA145239A true CA145239A (en) 1913-01-14

Family

ID=45264954

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000145239A Expired CA145239A (en) 1912-08-01 1912-08-01 Tunnelling machine

Country Status (1)

Country Link
CA (1) CA145239A (en)

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