CA423346A - Perforatrice pneumatique a roc - Google Patents

Perforatrice pneumatique a roc

Info

Publication number
CA423346A
CA423346A CA423346A CA423346DA CA423346A CA 423346 A CA423346 A CA 423346A CA 423346 A CA423346 A CA 423346A CA 423346D A CA423346D A CA 423346DA CA 423346 A CA423346 A CA 423346A
Authority
CA
Canada
Prior art keywords
rock drill
pneumatic rock
pneumatic
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
CA423346A
Other languages
English (en)
Inventor
Ernest Downing Robert
Hugh Tregoning Arthur
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 CA423346A publication Critical patent/CA423346A/fr
Expired legal-status Critical Current

Links

CA423346A Perforatrice pneumatique a roc Expired CA423346A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA423346T

Publications (1)

Publication Number Publication Date
CA423346A true CA423346A (fr) 1944-10-24

Family

ID=35534349

Family Applications (1)

Application Number Title Priority Date Filing Date
CA423346A Expired CA423346A (fr) Perforatrice pneumatique a roc

Country Status (1)

Country Link
CA (1) CA423346A (fr)

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