Economic necessity of some radical improvement in present methods of switching freight cars. Description of novel process and means devised by author. (Railways)
A proposed catapult switching yard
Eng. Contracting
Engineering and Contracting ; 61 , n 2
1924
6 pages
4 Figs.
Aufsatz (Zeitschrift)
Englisch
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INCENDIARY WARHEAD LAUNCH CATAPULT, COMBUSTION EXPANSION FORCE CATAPULT, NUCLEAR CATAPULT
Europäisches Patentamt | 2024
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