BR8604774A -
PROCESS OF EXCAVATING THE STERILE LAYER FROM A MINERAL OR CARBONIFERA SHAFT, DRAWING EXCAVATOR AND SCRAPER-SCRAPER
- Google Patents
PROCESS OF EXCAVATING THE STERILE LAYER FROM A MINERAL OR CARBONIFERA SHAFT, DRAWING EXCAVATOR AND SCRAPER-SCRAPER
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Publication number
BR8604774A
BR8604774ABR8604774ABR8604774ABR8604774ABR 8604774 ABR8604774 ABR 8604774ABR 8604774 ABR8604774 ABR 8604774ABR 8604774 ABR8604774 ABR 8604774ABR 8604774 ABR8604774 ABR 8604774A
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Application filed by Beatty & Ass R AfiledCriticalBeatty & Ass R A
Publication of BR8604774ApublicationCriticalpatent/BR8604774A/en
BR8604774A1985-10-021986-10-02
PROCESS OF EXCAVATING THE STERILE LAYER FROM A MINERAL OR CARBONIFERA SHAFT, DRAWING EXCAVATOR AND SCRAPER-SCRAPER
BR8604774A
(en)