William David Le Fevre
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William David Le Fevre was an aero inventor in Dover, Delaware, US. He worked on multi-masted helicopters, possibly on balloons.
Patents whose inventor or applicant is William David Le Fevre
- Patent US-1909-932712 (English title: Airship, Filing date: 1908-02-20)
- Patent US-1912-1028891 (English title: Airship, Filing date: 1910-11-02)
References
Names | William David Le Fevre |
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Birth date | |
Death date | |
Countries | US |
Locations | Dover, DE |
Occupations | |
Tech areas | Helicopter |
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