CA515357A - Perforatrices a percussion - Google Patents

Perforatrices a percussion

Info

Publication number
CA515357A
CA515357A CA515357A CA515357DA CA515357A CA 515357 A CA515357 A CA 515357A CA 515357 A CA515357 A CA 515357A CA 515357D A CA515357D A CA 515357DA CA 515357 A CA515357 A CA 515357A
Authority
CA
Canada
Prior art keywords
rock drills
percussion rock
percussion
drills
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
CA515357A
Other languages
English (en)
Inventor
Craig Ernest
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 CA515357A publication Critical patent/CA515357A/fr
Expired legal-status Critical Current

Links

CA515357A Perforatrices a percussion Expired CA515357A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA515357T

Publications (1)

Publication Number Publication Date
CA515357A true CA515357A (fr) 1955-08-09

Family

ID=35666448

Family Applications (1)

Application Number Title Priority Date Filing Date
CA515357A Expired CA515357A (fr) Perforatrices a percussion

Country Status (1)

Country Link
CA (1) CA515357A (fr)

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