Patent IT-1908-94217

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Could relate to Patent IT-1908-94928 by Bertelli, filed a month later.

  • Inventor location: Brescia
  • Registro attestati: 282/212

Sources


Year filed 1908
Year granted
Office IT
Patent number 94217
Inventors Achille Bertelli, Achille Bertelli fu Alessandro
Inventor country IT
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Original title Elicoptero per navigazione aerea ad eliche speciali paraboliche con dispositivi lancianti e paracadute
English title Helicopter using parabolic propeller, with methods for launch and parachute
Tech fields helicopter, propeller, takeoff, parachute
Filing date 1908-03-09
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Related to aircraft? 1
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National tech categories IT 8
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Citations from after 1930
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