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CA438165A - Perforatrice a roc - Google Patents

Perforatrice a roc

Info

Publication number
CA438165A
CA438165A CA438165A CA438165DA CA438165A CA 438165 A CA438165 A CA 438165A CA 438165 A CA438165 A CA 438165A CA 438165D A CA438165D A CA 438165DA CA 438165 A CA438165 A CA 438165A
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
CA438165A
Other languages
English (en)
Inventor
Redington John
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.)
Individual
Original Assignee
Individual
Publication date
Application granted granted Critical
Publication of CA438165A publication Critical patent/CA438165A/fr
Expired legal-status Critical Current

Links

CA438165A Perforatrice a roc Expired CA438165A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA438165T

Publications (1)

Publication Number Publication Date
CA438165A true CA438165A (fr) 1946-11-26

Family

ID=35553400

Family Applications (1)

Application Number Title Priority Date Filing Date
CA438165A Expired CA438165A (fr) Perforatrice a roc

Country Status (1)

Country Link
CA (1) CA438165A (fr)

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