11th December 1942, Page 36
11th December 1942
Page 36
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Page 36, 11th December 1942
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Self Changing Gearbox Controlled By Speed And Torque
A Résumé of Patent Specifica. lions That Have Recently Been Published B EARING the name Wind fields, Ltd., Montreal, Canada, patent ,No. 548,044 discloses a design for an......