RM

Roy MacKenzie

DI Dresser Industries: 2 patents #157 of 787Top 20%
HS Halliburton Energy Services: 2 patents #2,138 of 4,711Top 50%
Overall (All Time): #1,262,662 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
6913240 Electrohydraulic control unit 2005-07-05
6102828 Electrohydraulic control unit 2000-08-15
5983743 Actuator assembly Ronald W. McGregor, Ronn G. Madrid, Stanley A. Weise 1999-11-16
5916325 Actuator assembly and torque limiting system for same Ronn G. Madrid, Don Hiller, Terry Cloninger, Jim S. McMillan 1999-06-29