CA290820A - Perforatrice rotative avec avance hydraulique - Google Patents

Perforatrice rotative avec avance hydraulique

Info

Publication number
CA290820A
CA290820A CA290820A CA290820DA CA290820A CA 290820 A CA290820 A CA 290820A CA 290820 A CA290820 A CA 290820A CA 290820D A CA290820D A CA 290820DA CA 290820 A CA290820 A CA 290820A
Authority
CA
Canada
Prior art keywords
hydraulic feed
feed rotary
rotary drills
drills
hydraulic
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
CA290820A
Other languages
English (en)
Inventor
Benjamin Anderson Olof
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.)
EJ Longyear Manufacturing Co
Original Assignee
EJ Longyear Manufacturing Co
Publication date
Application granted granted Critical
Publication of CA290820A publication Critical patent/CA290820A/fr
Expired legal-status Critical Current

Links

CA290820A Perforatrice rotative avec avance hydraulique Expired CA290820A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA290820T

Publications (1)

Publication Number Publication Date
CA290820A true CA290820A (fr) 1929-06-25

Family

ID=35227632

Family Applications (1)

Application Number Title Priority Date Filing Date
CA290820A Expired CA290820A (fr) Perforatrice rotative avec avance hydraulique

Country Status (1)

Country Link
CA (1) CA290820A (fr)

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