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May 9

blueprint (copy)
On this date 1899, John Albert Burr invented one of the first rotary-blade lawn mowers.

This Black inventors Patent number is #624,749.

Reference:
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
 

    

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