CA294756A - Perforatrice a roc - Google Patents

Perforatrice a roc

Info

Publication number
CA294756A
CA294756A CA294756A CA294756DA CA294756A CA 294756 A CA294756 A CA 294756A CA 294756 A CA294756 A CA 294756A CA 294756D A CA294756D A CA 294756DA CA 294756 A CA294756 A CA 294756A
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
CA294756A
Other languages
English (en)
Inventor
Howell Smickle Raymond
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 CA294756A publication Critical patent/CA294756A/fr
Expired legal-status Critical Current

Links

CA294756A Perforatrice a roc Expired CA294756A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA294756T

Publications (1)

Publication Number Publication Date
CA294756A true CA294756A (fr) 1929-11-12

Family

ID=35232074

Family Applications (1)

Application Number Title Priority Date Filing Date
CA294756A Expired CA294756A (fr) Perforatrice a roc

Country Status (1)

Country Link
CA (1) CA294756A (fr)

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