Inventor

STEFFES FRANK J

3 patents

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

CROWN ZELLERBACH CORP

2 patents

US4054625AOct 18, 1977

Process for making fibers

CROWN ZELLERBACH CORP36 citations88

US4050980ASep 27, 1977

Selective delamination of wood chips

CROWN ZELLERBACH CORP19 citations69

BLACK CLAWSON INC

1 patent

US4452694AJun 5, 1984

Apparatus for selective sorting of material chips

BLACK CLAWSON INC44 citations88