He invented the Folding Wing Aircraft which helped in World War II
He invented the plastic bag.
He did not invent the escalator or the fountain pen. He first of all was to busy to invent stairs that move. Second he patented the fountain pen he did NOT invent it
Bulletproof glass
He invented the Acetylene Buoy
How did William L Potts come up with the traffic lights?=who inspired William L Potts?=
Hermon L Grimes invented the first automatic folding wing airplane, Franklin D. Roosevelt was the president who used the invention in World War ll
The alpha helix
Herman L. Page died in 1873.
Herman L. Page was born in 1818.
Herman L. Humphrey was born in 1830.
Herman L. Humphrey died in 1902.
Steven L. Herman was born in 1959.
Arthur L. Herman was born in 1956.
He invented the plastic bag.
Ronald L. Grimes has written: 'Rite out of place' 'Beginnings in Ritual Studies' -- subject(s): Rituel
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It was invented in 1929.