Inventor

ELDER ROBERT L

US2 patents

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

LEADVILLE SILVER AND GOLD

1 patent

US5232490AAug 3, 1993

Oxidation/reduction process for recovery of precious metals from MnO2 ores, sulfidic ores and carbonaceous materials

LEADVILLE SILVER AND GOLD99 citations89

KERR MCGEE COAL CORP

1 patent

US4904154AFeb 27, 1990

Loading system for railroad cars

KERR MCGEE COAL CORP25 citations83