CA330941A - Perforatrice a roc - Google Patents

Perforatrice a roc

Info

Publication number
CA330941A
CA330941A CA330941A CA330941DA CA330941A CA 330941 A CA330941 A CA 330941A CA 330941 A CA330941 A CA 330941A CA 330941D A CA330941D A CA 330941DA CA 330941 A CA330941 A CA 330941A
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
CA330941A
Other languages
English (en)
Inventor
William Augustus Smith, Sr.
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 CA330941A publication Critical patent/CA330941A/fr
Expired legal-status Critical Current

Links

CA330941A Perforatrice a roc Expired CA330941A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA330941T

Publications (1)

Publication Number Publication Date
CA330941A true CA330941A (fr) 1933-03-14

Family

ID=35293311

Family Applications (1)

Application Number Title Priority Date Filing Date
CA330941A Expired CA330941A (fr) Perforatrice a roc

Country Status (1)

Country Link
CA (1) CA330941A (fr)

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