Drop bottom mine car
United States Patent 2542437

Inventors:
Shields, Robert A.
Kepner, Robert C.
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Publication Date:
02/20/1951
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Assignee:
AMERICAN CAR & FOUNDRY CO
Primary Class:
105/253
Other Classes:
105/364
International Classes:
B61D7/16; B61D7/00
US Patent References:
0830916N/A
0470334N/A