1) Italian invention
Found on
https://www.crosswordclues.com/clue/architonnerre
The Architonnerre was a steam-powered cannon, a description of which is found in the papers of Leonardo da Vinci dating to the late 15th century, although he attributes its invention to Archimedes in the 3rd century BC. Leonardo`s description was hidden amongst his papers until it was rediscovered by Étienne-Jean Delécluze of the French Institu....
Found on
http://en.wikipedia.org/wiki/Architonnerre
No exact match found.
