CA321460A - Coal mining apparatus - Google Patents

Coal mining apparatus

Info

Publication number
CA321460A
CA321460A CA321460A CA321460DA CA321460A CA 321460 A CA321460 A CA 321460A CA 321460 A CA321460 A CA 321460A CA 321460D A CA321460D A CA 321460DA CA 321460 A CA321460 A CA 321460A
Authority
CA
Canada
Prior art keywords
coal mining
mining apparatus
coal
mining
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
CA321460A
Other languages
French (fr)
Inventor
D. Levin Nils
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.)
Jeffrey Manufacturing Co
Original Assignee
Jeffrey Manufacturing Co
Publication date
Application granted granted Critical
Publication of CA321460A publication Critical patent/CA321460A/en
Expired legal-status Critical Current

Links

CA321460A Coal mining apparatus Expired CA321460A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA321460T

Publications (1)

Publication Number Publication Date
CA321460A true CA321460A (en) 1932-04-12

Family

ID=35282013

Family Applications (1)

Application Number Title Priority Date Filing Date
CA321460A Expired CA321460A (en) Coal mining apparatus

Country Status (1)

Country Link
CA (1) CA321460A (en)

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