Boring or penetrating the earth
Means traveling with tool to constrain tool to bore along...
Sectional guide or shaft having means to lock sections in...
Inventor
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Apparatus for drilling curved sections of well holes
Method of adjusting backlash in a down hole bearing assembly
Method of increasing the off bottom load capacity of a bearing a
Method of securing a rotary cutter to a body of a down hole...
Orientatable adjustable bent housing
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Profile ID: LFUS-PAI-P-1729703