CA407454A - Drilling apparatus - Google Patents

Drilling apparatus

Info

Publication number
CA407454A
CA407454A CA407454A CA407454DA CA407454A CA 407454 A CA407454 A CA 407454A CA 407454 A CA407454 A CA 407454A CA 407454D A CA407454D A CA 407454DA CA 407454 A CA407454 A CA 407454A
Authority
CA
Canada
Prior art keywords
drilling apparatus
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
CA407454A
Other languages
French (fr)
Inventor
F. Osgood 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.)
Sullivan Machinery Co
Original Assignee
Sullivan Machinery Co
Publication date
Application granted granted Critical
Publication of CA407454A publication Critical patent/CA407454A/en
Expired legal-status Critical Current

Links

CA407454A Drilling apparatus Expired CA407454A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA407454T

Publications (1)

Publication Number Publication Date
CA407454A true CA407454A (en) 1942-09-15

Family

ID=35418754

Family Applications (1)

Application Number Title Priority Date Filing Date
CA407454A Expired CA407454A (en) Drilling apparatus

Country Status (1)

Country Link
CA (1) CA407454A (en)

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