He made 5 inventions.
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According to the U*X*L Encyclopedia of World Biography. Ed. Laura B. Tyle. Vol. 1. p166-168. From Gale Virtual Reference Library, Benjamin Banneker had three sisters.
he showed Jefferson how Jefferson was wrong in Jefferson's views of african americans by quoting Jefferson in a letter to Jefferson about how blacks were not inferior like Jefferson said and went against Jefferson.
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i think she only made 3 reconizable inventions what were they they were the feeding tube for amputees a "portable receptacle support" which is a brace around the neck to support a bowl, cup, or dish and the disposable cardboard emisis basin. this all i know
the inventions include many things for example Duplex telegraph system, phonograph, carbon button microphone,NOT the light bulb though.