Inventor
DOPF ANTHONY ROBERT
CA4 patents
Patents
4 patentsUS6158532ADec 12, 2000
Subassembly electrical isolation connector for drill rod
RYAN ENERGY TECHNOLOGIES INC100 citations96
US6050353AApr 18, 2000
Subassembly electrical isolation connector for drill rod
RYAN ENERGY TECHNOLOGIES INC74 citations94
US6572152B2Jun 3, 2003
Subassembly electrical isolation connector for drill rod
RYAN ENERGY TECHNOLOGIES INC47 citations90
US6367323B1Apr 9, 2002
Dynamic pressure device for oil drill systems
RYAN ENERGY TECHNOLOGIES INC25 citations89