Inventor

ROGALA JOHN

US2 patents

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

EASTERN

1 patent

US4162133AJul 24, 1979

Resin reinforced expansion anchor and method of installation

EASTERN43 citations88

CLARK CARL A

1 patent

US4662795AMay 5, 1987

Method of supporting a mine roof using nut element with breakable portion

CLARK CARL A34 citations87