Historedia
Episode 2 of 2

Patent Grant by Napoleon

When
20 July 1807
Where
Paris
Part of
Niépce's Pyréolophore demonstrated on the Saône

Napoleon Bonaparte signed a patent for the Pyréolophore on 20 July 1807 following the boat demonstration.

The patent was granted by the Bureau of Arts and Trades in Paris. It was signed by Emperor Napoleon Bonaparte and dated 20 July 1807. The grant recognized the Niépce brothers' invention as the first internal combustion engine to power a boat.

Sources

  1. Pyréolophore Wikipedia, revision of 2026-08-25

Machine-drafted from the cited Wikipedia passages and checked by a reviewing model, not by a human editor. Every passage cites the revision it was written from; dates and places follow those passages.