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Individual
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Individual
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Priority to ES210252ApriorityCriticalpatent/ES210252A1/en
Publication of ES210252A1publicationCriticalpatent/ES210252A1/en
New propulsion system for bicycles characterized by comprising two essentially similar mechanisms mounted on both sides of the machine and each representing a different speed with transmissions and independent mechanical elements established on a frame in which a vertical bar is provided that joins the lower one with a reinforcing branch interspersed between them for the assembly of two parallel crowns. (Machine-translation by Google Translate, not legally binding)
ES210252A1953-07-081953-07-08A new propulsion system for bikes (Machine-translation by Google Translate, not legally binding)
ExpiredES210252A1
(en)
A new system for the operation of bikes and other vehicles, with the smallest human effort (Machine-translation by Google Translate, not legally binding)