HU179720B - Instrument of deep drilling for measuring the advance of drill and depth of bottom,furthermore the speed of setting in and out of drilling rods and that of setting in of drill pipes
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Instrument of deep drilling for measuring the advance of drill and depth of bottom,furthermore the speed of setting in and out of drilling rods and that of setting in of drill pipes
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Application filed by Koeolajkutato VallalatfiledCriticalKoeolajkutato Vallalat
Priority to HUJA000858priorityCriticalpatent/HU179720B/en
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HUJA0008581979-10-111979-10-11Instrument of deep drilling for measuring the advance of drill and depth of bottom,furthermore the speed of setting in and out of drilling rods and that of setting in of drill pipes
HU179720B
(en)
Instrument of deep drilling for measuring the advance of drill and depth of bottom,furthermore the speed of setting in and out of drilling rods and that of setting in of drill pipes
Instrument of deep drilling for measuring the advance of drill and depth of bottom,furthermore the speed of setting in and out of drilling rods and that of setting in of drill pipes
Instrument of deep drilling for measuring the advance of drill and depth of bottom,furthermore the speed of setting in and out of drilling rods and that of setting in of drill pipes
Instrument of deep drilling for measuring the advance of drill and depth of bottom,furthermore the speed of setting in and out of drilling rods and that of setting in of drill pipes