Wallace R. Turnbull invented the variable-pitch propeller.
Wallace Hume Carothers is famous because he invented the NYLON and the Diamine Dicarboxylic Acid Salts in the 1900's.
Elbert R. Robinson invented the electric railway trolley, for which he received a patent in 1893.
He invented nylon. He did so in 1930 when he worked at the Dupont Chemical Company, and he made it as an affordable alternative to silk.
S. R. Scottron invented the curtain rod. It was patented on august 30th 1892.
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Wallace Rupert Turnbull was born in 1870.
Wallace Turner died on 2010-09-18.
Variable pitch propeller
The inventor of the propeller is Wallace Turnbull.
Marjorie R. Turnbull was born on 1940-07-04.
1843
W. R. Turnbull invented air plane pitch propellers Lot of other people invented this to but only w.r turnbulls invention was a success the other people invented propeller's which only could stay in the sky but would not last long.
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he didnt invent anything although he created the schiltrom tactic
Wallace R. Brode was born in 1900.
Wallace R. Brode died in 1974.
Frank R. Wallace was born in 1932.