CA196540A - Appareil a tunnels - Google Patents

Appareil a tunnels

Info

Publication number
CA196540A
CA196540A CA196540A CA196540DA CA196540A CA 196540 A CA196540 A CA 196540A CA 196540 A CA196540 A CA 196540A CA 196540D A CA196540D A CA 196540DA CA 196540 A CA196540 A CA 196540A
Authority
CA
Canada
Prior art keywords
tunnelling apparatus
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
CA196540A
Other languages
English (en)
Inventor
Gerald Hastings Cornelius
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
Publication date
Application granted granted Critical
Publication of CA196540A publication Critical patent/CA196540A/fr
Expired legal-status Critical Current

Links

CA196540A Appareil a tunnels Expired CA196540A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA196540T

Publications (1)

Publication Number Publication Date
CA196540A true CA196540A (fr) 1920-01-27

Family

ID=35065848

Family Applications (1)

Application Number Title Priority Date Filing Date
CA196540A Expired CA196540A (fr) Appareil a tunnels

Country Status (1)

Country Link
CA (1) CA196540A (fr)

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