CA303891A - Drilling device - Google Patents

Drilling device

Info

Publication number
CA303891A
CA303891A CA303891A CA303891DA CA303891A CA 303891 A CA303891 A CA 303891A CA 303891 A CA303891 A CA 303891A CA 303891D A CA303891D A CA 303891DA CA 303891 A CA303891 A CA 303891A
Authority
CA
Canada
Prior art keywords
drilling device
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
CA303891A
Other languages
French (fr)
Inventor
M. Gildersleeve Arthur
L. Dean Charles
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.)
UNIVERSAL ROTARY BIT Co
Original Assignee
UNIVERSAL ROTARY BIT Co
Publication date
Application granted granted Critical
Publication of CA303891A publication Critical patent/CA303891A/en
Expired legal-status Critical Current

Links

CA303891A Drilling device Expired CA303891A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA303891T

Publications (1)

Publication Number Publication Date
CA303891A true CA303891A (en) 1930-09-09

Family

ID=35257037

Family Applications (1)

Application Number Title Priority Date Filing Date
CA303891A Expired CA303891A (en) Drilling device

Country Status (1)

Country Link
CA (1) CA303891A (en)

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