Alfred Halleux was an aero inventor who filed from Hungary. He seems to have filed a patent simultaneously in France and Great Britain. Tentatively I would call the French one the primary patent, assuming it was granted first which seems likely.
Patents whose inventor or applicant is Alfred Halleux
- Patent GB-1908-20489 (English title: Improvements in flying machines, Filing date: 1908-09-29)
- Patent FR-1909-394784 (English title: Aviation apparatus, Filing date: 1908-09-29)