| 10378288 |
Downhole drill bit incorporating cutting elements of different geometries |
David R. Hall, Ronald B. Crockett |
2019-08-13 |
$14,386,000 |
| 9915102 |
Pointed working ends on a bit |
David R. Hall, Ronald B. Crockett |
2018-03-13 |
$56,472,000 |
| 9708856 |
Downhole drill bit |
David R. Hall, Ronald B. Crockett |
2017-07-18 |
|
| 9540886 |
Thick pointed superhard material |
David R. Hall, Ronald B. Crockett, Jeff Jepson, Scott Dahlgren |
2017-01-10 |
$28,429,000 |
| 9145742 |
Pointed working ends on a drill bit |
David R. Hall, Ronald B. Crockett |
2015-09-29 |
$86,037,000 |
| 9051794 |
High impact shearing element |
David R. Hall, Ronald B. Crockett, Matt Kudla |
2015-06-09 |
$44,885,000 |
| 9051795 |
Downhole drill bit |
David R. Hall, Ronald B. Crockett |
2015-06-09 |
$44,885,000 |
| 8998346 |
Attack tool with an interruption |
David R. Hall, Ronald B. Crockett, Jeff Jepson |
2015-04-07 |
|
| 8783845 |
System for aligning driven and idler rollers in printer |
Bob Yraceburu |
2014-07-22 |
|
| 8651654 |
Pinch roller apparatus for printer |
Bob Yraceburu |
2014-02-18 |
|
| 8622155 |
Pointed diamond working ends on a shear bit |
David R. Hall, Ronald B. Crockett |
2014-01-07 |
$36,994,000 |
| 8590644 |
Downhole drill bit |
David R. Hall, Ronald B. Crockett |
2013-11-26 |
$61,158,000 |
| 8567942 |
System for transporting media in printer |
Paul Weiskopf, Richard Alan Kelley |
2013-10-29 |
|
| 8528664 |
Downhole mechanism |
David R. Hall |
2013-09-10 |
$65,782,000 |
| 8136887 |
Non-rotating pick with a pressed in carbide segment |
David R. Hall, Ronald B. Crockett, Jeff Jepson |
2012-03-20 |
$34,889,000 |
| 8122980 |
Rotary drag bit with pointed cutting elements |
David R. Hall, Ronald B. Crockett |
2012-02-28 |
$52,165,000 |
| 8109349 |
Thick pointed superhard material |
David R. Hall, Ronald B. Crockett, Jeff Jepson, Scott Dahlgren |
2012-02-07 |
$59,104,000 |
| 8028774 |
Thick pointed superhard material |
David R. Hall, Ronald B. Crockett, Jeff Jepson, Scott Dahlgren |
2011-10-04 |
$38,520,000 |
| 8020471 |
Method for manufacturing a drill bit |
David R. Hall, Ronald B. Crockett |
2011-09-20 |
$19,364,000 |
| 8011457 |
Downhole hammer assembly |
David R. Hall, Scott Dahlgren |
2011-09-06 |
$44,137,000 |
| 7967082 |
Downhole mechanism |
David R. Hall |
2011-06-28 |
$85,700,000 |
| 7886851 |
Drill bit nozzle |
David R. Hall |
2011-02-15 |
$49,142,000 |
| 7762353 |
Downhole valve mechanism |
David R. Hall |
2010-07-27 |
$43,743,000 |
| 7694756 |
Indenting member for a drill bit |
David R. Hall, Francis Leany |
2010-04-13 |
|
| 7669938 |
Carbide stem press fit into a steel body of a pick |
David R. Hall, Ronald B. Crockett |
2010-03-02 |
|
