Yes he did. He invented the fountain pen.
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He did NOT invent the fountain pen he patented it. The first fountain pen was invented by a french-man named M.Bion. Lewis Waterman just improved it.
they invent cheese
Lewis and Clark did not invent anything.
is a pen a insulator of conductor
him and his son helped invent the compound microscope by putting two lenses together warning they did not invent the microscope but did invent the compound microscope