Willis, Texas
United States
9
2012-02-02
The entities that hold a legal rights for patent applications filed by inventor Oldham Jack T.:
Jack T. Oldham from Willis, US has applied for patents for these inventions. The list has both pending applications and granted patents:
Drilling apparatus with reduced exposure of cutters and methods of drilling
#2 | 2011-05-19Drilling apparatus with reduced exposure of cutters and methods of drilling
#3 | 2008-09-18Casing and liner drilling bits and reamers
#4 | 2006-12-14Drilling apparatus with reduced exposure of cutters and methods of drilling
#5 | 2006-08-24Drilling tool equipped with improved cutting element layout to reduce cutter damage through formation changes, methods of design and operation thereof
#6 | 2005-12-29Drill bits with reduced exposure of cutters
#7 | 2005-08-30Drill bits with reduced exposure of cutters
#8 | 2005-08-25Casing and liner drilling bits
#9 | 2005-02-24Window mill and drill bit
3383806 ⎘