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Patent US7735426 - Hopper cars with one or more discharge control
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Hopper Car Inspection
Modeling Hopper Cars
ECUX 860571-860770 Trinity 4-bay plastics hopper 5851cf (Phase 2) - RRMods
Patent US7735426 - Hopper cars with one or more discharge control
Patent US5259322 - Five unit articulated covered hopper car - Google
ECUX 860571-860770 Trinity 4-bay plastics hopper 5851cf (Phase 2) - RRMods
Cylindrical Covered Hopper
Patent US7735426 - Hopper cars with one or more discharge control
Equipment for internal and external cleaning of hopper cars
Patent US6067912 - Automated discharge system for hopper car - Google