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• Patent FR-1899-294357
  * Inventor's name is probably Rudolf according to a related patent filed in Spain, listed in [[Amezcua Ogáyar, ...r, 2003]], p110 (listing a related, nearly simultaneous patent in Spain by Perzina -- [[Patent ES-1899-25104]], 25 Nov 1899, "Un motor de viento", CPC F03D)))
  1 KB (189 words) - 15:28, 29 March 2023