JPH0546432B

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Bibliographic Details
Main Author MUKAI TOSHIO
Format Patent
LanguageEnglish
Published 13.07.1993
Edition5
Subjects
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
GALLERIES
LARGE UNDERGROUND CHAMBERS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
SHAFTS
TUNNELS
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Bibliography:Application Number: JP19860010822