Sprinkler (blueprint)
On this date in 1897, African American inventor Joseph H. Smith patented the sprinkler.
This African American inventors Patent No. is #581.785
Created Equal The Lives and Ideas of Black American Innovators
By James Michael Brodie
Copyright 1993, by Bill Adler Books, Inc.
William Morrow and Co. Inc., New York
ISBN 0-688-11536-5
