Boring or penetrating the earth – Bit or bit element – With fluid conduit lining or element
Reexamination Certificate
2005-11-22
2005-11-22
Neuder, William (Department: 3672)
Boring or penetrating the earth
Bit or bit element
With fluid conduit lining or element
C175S324000
Reexamination Certificate
active
06966393
ABSTRACT:
A drive steel member for driving engagement with a rotary drilling machine, including a chuck adapter having main body and chuck seating means and being constructed and arranged in fixed, sealed relation on one end of the drive steel member.
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patent: 5400861 (1995-03-01), Sheirer
patent: 6092612 (2000-07-01), Brady
patent: 6161635 (2000-12-01), Brady
patent: 6374916 (2002-04-01), Laflin
Heywood Richard G.
Neuder William
The William J. Brady Loving Trust
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