Hopper Car Diagram
Patents hopper discharge cars Patents hopper car claims covered drawing Patent us7735426
Patent US5259322 - Five unit articulated covered hopper car - Google
Hopper car patents hatch covered Hopper car bulk covered railroad dry transport loads Patents hopper covered drawing
Patents hopper railcar claims
Patent us5259322Patent us7080598 Patents hopperPatents hopper covered car drawing.
Railroad covered hopper car for transport of dry bulk loadsPatent us3677196 Patent us3664270Patent us5433559.
Patent us4362111
Patent us5259322Hopper car patents covered .
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Patent US3664270 - Covered hopper car with hatch cover means - Google
Patent US7735426 - Hopper cars with one or more discharge control
Patent US3677196 - Covered hopper car - Google Patents
Railroad covered hopper car for transport of dry bulk loads
Patent US5259322 - Five unit articulated covered hopper car - Google
Patent US4362111 - Covered hopper car - Google Patents
Patent US5259322 - Five unit articulated covered hopper car - Google