Inventor
MARSHALL DANIEL T
US4 patents
Patents
4 patentsUS11408131B2Aug 9, 2022
Track-lifting and ballast-spreading apparatus
HERZOG RAILROAD SERVICES INC0 citations56
US12435475B2Oct 7, 2025
Rail tie distribution system
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US12473696B2Nov 18, 2025
Rail tie distribution control system
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US11548537B2Jan 10, 2023
Centering apparatus for hopper car doors
HERZOG RAILROAD SERVICES INC0 citations44