John Davis invented the backstaff and the double quadrant. He is more famous for the double quadrant, which people actually called the Davis quadrant. However, he is more famously known for being an English explorer.
no
The Saddle
1896
John Davis had a boy.
Stephen John Davis's birth name is Stephen John Davis.
Jacob Davis
William John Davis died in 1934.
William John Davis was born in 1848.
John Quincy Foltern did invent cupcakes.
He didn't invent anything
what did john parker invent in his older times i was just wandering
John Merle Davis has written: 'Davis: soldier, missionary' -- subject(s): Missions 'Davis'