CA412335A - Tiroir de perforatrice a roc - Google Patents

Tiroir de perforatrice a roc

Info

Publication number
CA412335A
CA412335A CA412335A CA412335DA CA412335A CA 412335 A CA412335 A CA 412335A CA 412335 A CA412335 A CA 412335A CA 412335D A CA412335D A CA 412335DA CA 412335 A CA412335 A CA 412335A
Authority
CA
Canada
Prior art keywords
valve mechanism
rock drill
drill valve
rock
valve
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
CA412335A
Other languages
English (en)
Inventor
Ernest Downing Robert
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 CA412335A publication Critical patent/CA412335A/fr
Expired legal-status Critical Current

Links

CA412335A Tiroir de perforatrice a roc Expired CA412335A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA412335T

Publications (1)

Publication Number Publication Date
CA412335A true CA412335A (fr) 1943-05-11

Family

ID=35521499

Family Applications (1)

Application Number Title Priority Date Filing Date
CA412335A Expired CA412335A (fr) Tiroir de perforatrice a roc

Country Status (1)

Country Link
CA (1) CA412335A (fr)

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