15th July 1955, Page 60
15th July 1955
Page 60
Page 60, 15th July 1955
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A Magnetically Operated Gearbox
P ATENT No. 729,831 comes from 1 S. A. Andre Citroen, 117-167 Quai de Javel, Paris, and gives details of a magnetically operated gearbox. The chief feature is that slip rings or......