CA749223A - Automatic control device for drilling apparatus - Google Patents

Automatic control device for drilling apparatus

Info

Publication number
CA749223A
CA749223A CA749223A CA749223DA CA749223A CA 749223 A CA749223 A CA 749223A CA 749223 A CA749223 A CA 749223A CA 749223D A CA749223D A CA 749223DA CA 749223 A CA749223 A CA 749223A
Authority
CA
Canada
Prior art keywords
control device
automatic control
drilling apparatus
drilling
automatic
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
CA749223A
Inventor
O. Melton James
M. Carpenter Irvin
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.)
GEOLOGRAPH Co
Original Assignee
GEOLOGRAPH Co
Publication date
Application granted granted Critical
Publication of CA749223A publication Critical patent/CA749223A/en
Expired legal-status Critical Current

Links

CA749223A Automatic control device for drilling apparatus Expired CA749223A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA749223T

Publications (1)

Publication Number Publication Date
CA749223A true CA749223A (en) 1966-12-27

Family

ID=36183584

Family Applications (1)

Application Number Title Priority Date Filing Date
CA749223A Expired CA749223A (en) Automatic control device for drilling apparatus

Country Status (1)

Country Link
CA (1) CA749223A (en)

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