CA294379A - Bouclier de tunnel - Google Patents

Bouclier de tunnel

Info

Publication number
CA294379A
CA294379A CA294379A CA294379DA CA294379A CA 294379 A CA294379 A CA 294379A CA 294379 A CA294379 A CA 294379A CA 294379D A CA294379D A CA 294379DA CA 294379 A CA294379 A CA 294379A
Authority
CA
Canada
Prior art keywords
tunnel shield
tunnel
shield
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
CA294379A
Other languages
English (en)
Inventor
Marsh Goodrich Chauncey
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 CA294379A publication Critical patent/CA294379A/fr
Expired legal-status Critical Current

Links

CA294379A Bouclier de tunnel Expired CA294379A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA294379T

Publications (1)

Publication Number Publication Date
CA294379A true CA294379A (fr) 1929-10-29

Family

ID=35231697

Family Applications (1)

Application Number Title Priority Date Filing Date
CA294379A Expired CA294379A (fr) Bouclier de tunnel

Country Status (1)

Country Link
CA (1) CA294379A (fr)

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