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
- Bollettino della proprietà intellettuale, 1909, p. 291
Year filed | 1908 |
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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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