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Priority to FI760716ApriorityCriticalpatent/FI57824C/fi
Priority to SE7703030Aprioritypatent/SE7703030L/xx
Publication of FI760716A7publicationCriticalpatent/FI760716A7/fi
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Publication of FI57824BpublicationCriticalpatent/FI57824B/fi
Publication of FI57824CpublicationCriticalpatent/FI57824C/fi
E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
E21D3/00—Raising shafts, i.e. working upwards from the bottom
Landscapes
Engineering & Computer Science
(AREA)
Mining & Mineral Resources
(AREA)
Life Sciences & Earth Sciences
(AREA)
General Life Sciences & Earth Sciences
(AREA)
Geochemistry & Mineralogy
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Geology
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Near-Field Transmission Systems
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Earth Drilling
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FI760716A1976-03-171976-03-17Foerfarande foer orientering av borren vid uppaotriktad borrning vid brytning och/eller foer utfoerande av elektrisk informationsoeverfoering
FI57824C
(fi)