John albert burr biography famous inventor
Who invented the lawn mower
John Albert Burr.
Granville t. woods invention
On May 9, , John Albert Burr patented an improved rotary blade lawn mower.
John albert burr net worth
John Albert Burr—Lawnmower.
John a burr wikipedia
John Burr was born in Maryland in He was the son of freed slaves and worked as a field hand until he was about At 18 he managed, with the patronage of wealthy African .