CA291787A - Colonne de perforatrice - Google Patents

Colonne de perforatrice

Info

Publication number
CA291787A
CA291787A CA291787A CA291787DA CA291787A CA 291787 A CA291787 A CA 291787A CA 291787 A CA291787 A CA 291787A CA 291787D A CA291787D A CA 291787DA CA 291787 A CA291787 A CA 291787A
Authority
CA
Canada
Prior art keywords
drill column
drill
column
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
CA291787A
Other languages
English (en)
Inventor
Christopher Hansen 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.)
Ingersoll Rand Co
Original Assignee
Ingersoll Rand Co
Publication date
Application granted granted Critical
Publication of CA291787A publication Critical patent/CA291787A/fr
Expired legal-status Critical Current

Links

CA291787A Colonne de perforatrice Expired CA291787A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA291787T

Publications (1)

Publication Number Publication Date
CA291787A true CA291787A (fr) 1929-07-30

Family

ID=35228599

Family Applications (1)

Application Number Title Priority Date Filing Date
CA291787A Expired CA291787A (fr) Colonne de perforatrice

Country Status (1)

Country Link
CA (1) CA291787A (fr)

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