Who patented the phonograph in 1877?
who patented the phonograph in 1877
FreebaseQA-train-14967.P0 FreebaseQA-train-14967.P1
phonograph phonograph
phonograph phonograph
m.063md m.063md
base.argumentmaps.original_idea.innovator law.invention.inventor
m.07bty
thomas edison
m.07bty
thomas edison