American inventor Theophilus Van Kannel was granted the patent for the revolving door.
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Arthur Schawlow & Charles Townes was granted the first patent for a laser.
A team of scientists invented the sports drink Gatorade in a University of Florida lab.
The Erickson Brothers submitted the application for the first dial telephone patent.
Inventor Otis Tufts patented the first elevator in the US.
Inventor Benjamin J. Lane patented the first self-contained gas mask.
