PHP = "The Patent History of the Phonograph."
Contains data on over 2000 US (and other) patents relating to
phonographs and records from 1878-1912. Filing dates as well as dates of issue, with
additional essays on company history and the patent system by Ray Wile and
Allen Koenigsberg. Also covers puzzle records, talking pictures, dolls,
repeaters, cabinets, horns, magnetic recording, cranes, discs/cylinders, etc.
Data is numerical, chronological, and alphabetical.
In a message dated 2/12/2016 5:07:26 P.M. Eastern Standard Time,
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