Assertion: napoleon's father | /r/HasProperty | nicolas appert
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text: The ‘father of canning’ confectioner Nicolas Appert came up with the idea to use sealed glass jars placed in boiling water to preserve food in 1809, and the later use of tin cans was the idea of another Frenchman, Pierre Durand; the reading and writing system for the blind, braille, was developed by Louis Braille who was blinded as a child; physician René Laennec invented the stethoscope at a hospital in Paris in 1816, first discovered by rolling up paper into a tube; and Alexandre-Ferdinand Godefroy patented a contraption was the world’s first hair dryer in 1888.