CA414466A - Perforatrice a roc - Google Patents

Perforatrice a roc

Info

Publication number
CA414466A
CA414466A CA414466A CA414466DA CA414466A CA 414466 A CA414466 A CA 414466A CA 414466 A CA414466 A CA 414466A CA 414466D A CA414466D A CA 414466DA CA 414466 A CA414466 A CA 414466A
Authority
CA
Canada
Prior art keywords
rock drill
drill
rock
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
CA414466A
Other languages
English (en)
Inventor
Andrew Morrison William
David Bennett Arthur
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 CA414466A publication Critical patent/CA414466A/fr
Expired legal-status Critical Current

Links

CA414466A Perforatrice a roc Expired CA414466A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA414466T

Publications (1)

Publication Number Publication Date
CA414466A true CA414466A (fr) 1943-08-10

Family

ID=35523658

Family Applications (1)

Application Number Title Priority Date Filing Date
CA414466A Expired CA414466A (fr) Perforatrice a roc

Country Status (1)

Country Link
CA (1) CA414466A (fr)

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