CA402865A - Overburden drilling device - Google Patents

Overburden drilling device

Info

Publication number
CA402865A
CA402865A CA402865A CA402865DA CA402865A CA 402865 A CA402865 A CA 402865A CA 402865 A CA402865 A CA 402865A CA 402865D A CA402865D A CA 402865DA CA 402865 A CA402865 A CA 402865A
Authority
CA
Canada
Prior art keywords
drilling device
overburden drilling
overburden
drilling
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
CA402865A
Other languages
French (fr)
Inventor
Morissette Napoleon
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 CA402865A publication Critical patent/CA402865A/en
Expired legal-status Critical Current

Links

CA402865A Overburden drilling device Expired CA402865A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA402865T

Publications (1)

Publication Number Publication Date
CA402865A true CA402865A (en) 1942-02-17

Family

ID=35413312

Family Applications (1)

Application Number Title Priority Date Filing Date
CA402865A Expired CA402865A (en) Overburden drilling device

Country Status (1)

Country Link
CA (1) CA402865A (en)

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