Clipper shops: it helped US win a large share of the world's sea trade.
John D Rockefeller did not invent anything. He owned the Oil Industry being very successful
AIRSHIP
the clutch
pacemaker
john Patterson invented the cash register
John W. Griffiths died in 1882.
John W. Griffiths was born in 1808.
John Griffiths - curator - was born in 1953.
John Griffiths - curator - died in 2010.
John Griffiths - academic - died in 1885.
John Griffiths - academic - was born in 1806.
John Lewis Griffiths has written: 'The greater patriotism'
John Calvert Griffiths was born on 1931-01-16.
John Griffiths was born on 1956-12-19.
John R. Griffiths has written: 'The low brass guide' -- subject(s): Trombone, Euphonium, Tuba
John Griffiths has written: 'Radio wave propagation and antennas' -- subject(s): Antennas (Electronics), Radio wave propagation
John Griffiths Barry has written: 'Some effects of variable excitation on synchronous motor oscillation ..' -- subject(s): Synchronous Electric motors