CA313791A - Sonnette de perforatrice a roc - Google Patents

Sonnette de perforatrice a roc

Info

Publication number
CA313791A
CA313791A CA313791A CA313791DA CA313791A CA 313791 A CA313791 A CA 313791A CA 313791 A CA313791 A CA 313791A CA 313791D A CA313791D A CA 313791DA CA 313791 A CA313791 A CA 313791A
Authority
CA
Canada
Prior art keywords
pile driver
rock drills
drills
rock
pile
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
CA313791A
Other languages
English (en)
Inventor
William Augustus Smith, Sr.
William Arthur Smith, Jr.
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 CA313791A publication Critical patent/CA313791A/fr
Expired legal-status Critical Current

Links

CA313791A Sonnette de perforatrice a roc Expired CA313791A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA313791T

Publications (1)

Publication Number Publication Date
CA313791A true CA313791A (fr) 1931-07-28

Family

ID=35273118

Family Applications (1)

Application Number Title Priority Date Filing Date
CA313791A Expired CA313791A (fr) Sonnette de perforatrice a roc

Country Status (1)

Country Link
CA (1) CA313791A (fr)

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