TECHNOLOGY
INVENTIONS & SCIENTISTS QUIZ
Please answer to the following Inventions & Scientists Question. Then you can indicate who must answer question 2.
The US Patent Office denied Charles Hall a patent on what invention, because something similar had appeared in two Robert Heinlein novels, "Stranger in a Strange Land" and "Double Star"?
The US Patent Office denied Charles Hall a patent on what invention, because something similar had appeared in two Robert Heinlein novels, "Stranger in a Strange Land" and "Double Star"?
