Inventor

MAIN JR DOUGLAS T

US3 patents

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

SPERRY RAIL INC

2 patents

US6600999B2Jul 29, 2003

Hi-rail vehicle-based rail inspection system

SPERRY RAIL INC91 citations93

US6476603B2Nov 5, 2002

Brush assembly for magnetic induction test apparatus

SPERRY RAIL INC27 citations90

UNIVERSAL VALVE CO INC

1 patent

US5593116AJan 14, 1997

Hose retractor

UNIVERSAL VALVE CO INC8 citations67