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Expired
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Louis Gathmann
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Individual
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Individual
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Publication of GB190718560ApublicationCriticalpatent/GB190718560A/en
18,560. Gathmann, L. March 6, [date applied for under Section 91 of Patents &c. Act, 1907]. Aerial machines without aerostats; adapted also to travel on land; propelling.-The flying-machine is raised by two superposed propellers 10, 10<1> of special construction driven in opposite directions by motors 19 through the gearing shown. The machine is mounted on wheels, which are shown geared to the motor shafts.
GB190718560D1907-03-061907-08-16Improvements in Air Propellers for Flying Machines.
ExpiredGB190718560A
(en)