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Vinyl was invented in the 1870's, not patented until a practical production method was developed almost 40 years later, and not considered a useful material commercially until perfected by the Goodrich Company in the 1920's. Edison's phonograph used a cylinder with a foil like tin covering.
They must attend until 1877 when T.A. Edison invents the first really working record machine using a wax cylinder. Starting from this idea they will arrive steps by steps to the vinyl disc as we know it now. The real magnetic recording born in 1898 due to the work of Danish technician inventor Valdemar Poulsen.