who invented both the phonograph in 1877 and the incandescent light bulb in 1879

who invented both the phonograph in 1877 and the incandescent light bulb in 1879. There are some references to who invented both the phonograph in 1877 and the incandescent light bulb in 1879 in this article. If you are looking for who invented both the phonograph in 1877 and the incandescent light bulb in 1879 you've came to the right place. We have posts about who invented both the phonograph in 1877 and the incandescent light bulb in 1879. You can check it out below.

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