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Class Information
Number: 175/216
Name: Boring or penetrating the earth > With above-ground means for handling drilling fluid or cutting > Standpipe
Description: Apparatus including a substantially vertical conduit means which is usually either part of, attached to, or adjacent a derrick, and which is used to conduit fluid from a point located near ground level to a fluid handling element fixed at one end of an axially movable tool shaft.










Patents under this class:

Patent Number Title Of Patent Date Issued
8556004 Bottom preventer for use in a drilling system Oct. 15, 2013
6814167 Boring device and boring method Nov. 9, 2004
6230824 Rotating subsea diverter May. 15, 2001
4915452 Hydraulic borehole mining system and method Apr. 10, 1990
4867256 Injection of polymer chemicals into drilling mud Sep. 19, 1989
4514103 Safety guides for use with a rotary hose and kelly spinner hoses and the combination thereof Apr. 30, 1985











 
 
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