Inventor

DAENICKE HEINRICH

DE3 patents

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

KRUEGER VOLKER

1 patent

US4889195ADec 26, 1989

Drill bit direct drive for deep well drilling tools

KRUEGER VOLKER24 citations88

CHRISTENSEN INC NORTON

1 patent

US4629013ADec 16, 1986

Drive device for a drill bit

CHRISTENSEN INC NORTON8 citations71

EASTMAN CHRISTENSEN CO

1 patent

US4854401AAug 8, 1989

Drill bit direct drive for deep well drilling tools

EASTMAN CHRISTENSEN CO11 citations70