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Marjorie Joyner and the Permanent Wave Machine

Marjorie Joyner and the Permanent Wave Machine

by | Sep 7, 2019 | Inventors

Not every invention is a brand new idea, out of the blue. Many inventions are an improvement on an older idea. People made toast before there were toasters, for example, but once we had electricity, we could use electricity to make toast, instead of risking burning...