Inventor

FILSHTINSKY MICHAEL

US2 patents

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

CHRISTENSEN INC NORTON

1 patent

US4566545AJan 28, 1986

Coring device with an improved core sleeve and anti-gripping collar with a collective core catcher

CHRISTENSEN INC NORTON167 citations91

CHRISTENSEN INC

1 patent

US4512423AApr 23, 1985

Coring device with an improved weighted core sleeve and anti-gripping collar

CHRISTENSEN INC17 citations70