Jean-Marie-Stephen Graf

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Jean-Marie-Stephen Graf was an aero inventor who worked on hydroplanes. Graf's name was sometimes written with an accent, thus: Jean-Marie-Stéphen Graf Occupation? Location?

Patents whose inventor or applicant is Jean-Marie-Stephen Graf

Patent FR-1915-491223 (English title: Incapacitated hydroaeranium, Filing date: 1915-07-30)
Patent FR-1919-491223.20842 (English title: hydroaeroplane, Supplementary to patent: Patent FR-1919-491223, Filing date: 1916-12-13)

Patents whose inventor or applicant is Jean-Marie-Stéphen Graf

Patent FR-1915-491223 (English title: Incapacitated hydroaeranium, Filing date: 1915-07-30)
Patent FR-1919-491223.20842 (English title: hydroaeroplane, Supplementary to patent: Patent FR-1919-491223, Filing date: 1916-12-13)

References

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Inventors