Did You Know...
...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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| Number | Title | Issue Date |
| 4911082 | Drop center gondola car A gondola railway car includes a pair of draft sills and a pair of end panels extending downwardly and terminating in a flat edge portion. The flat edge portion of the end panel is connected to a shear plate by a welded connection. A shed plate is include... | 03/27/1990 |
| 4589348 | Retrofitted railway car and method of producing same A gondola tub type railway car having an arrangement for transferring payloads from the car side panels more directly to the bolsters. The car at each end has a lower bolster for support by a car truck, and an upper bolster secured to the lower bolster pr... | 05/20/1986 |
| 4408542 | Center sill gondola car A gondola railway car comprising a car truck attached to each end of a continuous center sill, a pair of generally vertical end panels, a pair of generally vertical side panels joined to the end panels, a plurality of cross bearers extending from the cent... | 10/11/1983 |
| 4361097 | Railway gondola cars A railway gondola car suitable for rotary unloading. The floor of the car comprises a pair of concave troughs which extend between the center sill and the sides of the car having their axes parallel to the axis of the center sill along that portion of the... | 11/30/1982 |
| 4236459 | Depressed center car An open top gondola railway car of depressed center design having stub sills and an end panel at each end of the car body which slopes outwardly and upwardly from an intersection with a generally permanently closed bottom having horizontal plate portions ... | 12/02/1980 |
