CA541308A - Core-lifting means for rotary drills - Google Patents

Core-lifting means for rotary drills

Info

Publication number
CA541308A
CA541308A CA541308A CA541308DA CA541308A CA 541308 A CA541308 A CA 541308A CA 541308 A CA541308 A CA 541308A CA 541308D A CA541308D A CA 541308DA CA 541308 A CA541308 A CA 541308A
Authority
CA
Canada
Prior art keywords
core
lifting means
rotary drills
drills
rotary
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
CA541308A
Other languages
French (fr)
Inventor
M. Adamson William
B. Weldon George
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.)
UNIDRILLING Ltd
Original Assignee
UNIDRILLING Ltd
Publication date
Application granted granted Critical
Publication of CA541308A publication Critical patent/CA541308A/en
Expired legal-status Critical Current

Links

CA541308A Core-lifting means for rotary drills Expired CA541308A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA541308T

Publications (1)

Publication Number Publication Date
CA541308A true CA541308A (en) 1957-05-21

Family

ID=35698457

Family Applications (1)

Application Number Title Priority Date Filing Date
CA541308A Expired CA541308A (en) Core-lifting means for rotary drills

Country Status (1)

Country Link
CA (1) CA541308A (en)

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