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Joy Manufacturing Co
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Joy Manufacturing Co
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Publication date
Application filed by Joy Manufacturing CofiledCriticalJoy Manufacturing Co
Priority to FR746248ApriorityCriticalpatent/FR1252015A/fr
Application grantedgrantedCritical
Publication of FR1252015ApublicationCriticalpatent/FR1252015A/fr
E21C29/00—Propulsion of machines for slitting or completely freeing the mineral from the seam
E21C29/04—Propulsion of machines for slitting or completely freeing the mineral from the seam by cable or chains
E21C29/14—Propulsion of machines for slitting or completely freeing the mineral from the seam by cable or chains by haulage cable or chain pulling the machine along the working face
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Engineering & Computer Science
(AREA)
Mining & Mineral Resources
(AREA)
Mechanical Engineering
(AREA)
Life Sciences & Earth Sciences
(AREA)
General Life Sciences & Earth Sciences
(AREA)
Geochemistry & Mineralogy
(AREA)
Geology
(AREA)
FR746248A1957-08-281957-08-28Perfectionnement aux machines pour l'extraction continue par grandes tailles
ExpiredFR1252015A
(fr)