CPC B64D2700/62587
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Other emergency devices, e.g. balloons, parachutes with propellers ; parachute, helicopter, with automatic stability and human propulsion
Enclosing categories | CPC B64D/62 |
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Keywords | Parachute, Helicopter |
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Patents in category CPC B64D2700/62587
- Patent GB-1910-1640 (English title: Improvements in parachutes, Inventors: Friedrich Carl Mayer • August Ernst Grimmer, Filing date: 1910-01-21)
- Patent FR-1912-444533 (English title: helicopter parachute with automatic stability and human propulsion, Inventors: Ernest Bertin, Filing date: 1912-05-25)
- Patent FR-1912-444289 (English title: System of parachutes with springs for air-ships, Inventors: Achille Abraham, Filing date: 1912-05-25)