Inventor

ELLISON LEON D

US2 patents

⚠️ This page may combine multiple inventors who share the name “ELLISON LEON D”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

VARCO INT

1 patent

US7484625B2Feb 3, 2009

Shale shakers and screens with identification apparatuses

VARCO INT77 citations95

NAT OILWELL VARCO LP

1 patent

US8016037B2Sep 13, 2011

Drilling rigs with apparatus identification systems and methods

NAT OILWELL VARCO LP40 citations90