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Showing posts with label David Crosthwait jr. Show all posts
Showing posts with label David Crosthwait jr. Show all posts
Monday, February 27, 2012
Black History Facts
David Crosthwait, Jr., who created the heating system for New York City's Radio City Music Hall, holds 39 U.S. patents and 80 international patents pertaining to heating, refrigeration and temperature regulating systems.
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