CA999015A - Mining machines - Google Patents

Mining machines

Info

Publication number
CA999015A
CA999015A CA213,424A CA213424A CA999015A CA 999015 A CA999015 A CA 999015A CA 213424 A CA213424 A CA 213424A CA 999015 A CA999015 A CA 999015A
Authority
CA
Canada
Prior art keywords
mining machines
mining
machines
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
CA213,424A
Other versions
CA213424S (en
Inventor
Gordon E. Boast
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.)
Coal Industry Patents Ltd
Original Assignee
Coal Industry Patents Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Coal Industry Patents Ltd filed Critical Coal Industry Patents Ltd
Application granted granted Critical
Publication of CA999015A publication Critical patent/CA999015A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C31/00—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam
    • E21C31/02—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam for cutting or breaking-down devices
CA213,424A 1973-12-04 1974-11-12 Mining machines Expired CA999015A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5613073A GB1443996A (en) 1973-12-04 1973-12-04 Mining machines

Publications (1)

Publication Number Publication Date
CA999015A true CA999015A (en) 1976-10-26

Family

ID=10475809

Family Applications (1)

Application Number Title Priority Date Filing Date
CA213,424A Expired CA999015A (en) 1973-12-04 1974-11-12 Mining machines

Country Status (6)

Country Link
JP (1) JPS5724480B2 (en)
CA (1) CA999015A (en)
DE (1) DE2457105C2 (en)
FR (1) FR2253141B2 (en)
GB (1) GB1443996A (en)
PL (1) PL92992B1 (en)

Also Published As

Publication number Publication date
FR2253141A2 (en) 1975-06-27
DE2457105A1 (en) 1975-06-05
JPS5724480B2 (en) 1982-05-24
DE2457105C2 (en) 1982-12-30
FR2253141B2 (en) 1979-07-06
GB1443996A (en) 1976-07-28
PL92992B1 (en) 1977-04-30
JPS5086402A (en) 1975-07-11

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