Inventor
SHIRK TONY
US9 patents
⚠️ This page may combine multiple inventors who share the name “SHIRK TONY”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HERZOG RAILROAD SERVICES INC
7 patentsUS11408131B2Aug 9, 2022
Track-lifting and ballast-spreading apparatus
HERZOG RAILROAD SERVICES INC0 citations56
US12435475B2Oct 7, 2025
Rail tie distribution system
HERZOG RAILROAD SERVICES INC0 citations55
US12454808B2Oct 28, 2025
Rotary ditching attachment for a tool manipulating arm
HERZOG RAILROAD SERVICES INC0 citations45
US12473696B2Nov 18, 2025
Rail tie distribution control system
HERZOG RAILROAD SERVICES INC0 citations44
US11548537B2Jan 10, 2023
Centering apparatus for hopper car doors
HERZOG RAILROAD SERVICES INC0 citations44
US11858541B2Jan 2, 2024
Articulated rail-transport car
HERZOG RAILROAD SERVICES INC0 citations41
US10160333B2Dec 25, 2018
Backup power system for railroad power units
HERZOG RAILROAD SERVICES INC0 citations29