CA420412A - Appareil d'exploration sous terre - Google Patents

Appareil d'exploration sous terre

Info

Publication number
CA420412A
CA420412A CA420412A CA420412DA CA420412A CA 420412 A CA420412 A CA 420412A CA 420412 A CA420412 A CA 420412A CA 420412D A CA420412D A CA 420412DA CA 420412 A CA420412 A CA 420412A
Authority
CA
Canada
Prior art keywords
exploration apparatus
underground exploration
underground
exploration
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
CA420412A
Other languages
English (en)
Inventor
L. Hassler Gerald
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.)
Shell Development Co
Original Assignee
Shell Development Co
Publication date
Application granted granted Critical
Publication of CA420412A publication Critical patent/CA420412A/fr
Expired legal-status Critical Current

Links

CA420412A Appareil d'exploration sous terre Expired CA420412A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA420412T

Publications (1)

Publication Number Publication Date
CA420412A true CA420412A (fr) 1944-05-23

Family

ID=35531341

Family Applications (1)

Application Number Title Priority Date Filing Date
CA420412A Expired CA420412A (fr) Appareil d'exploration sous terre

Country Status (1)

Country Link
CA (1) CA420412A (fr)

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