U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

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...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.

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U.S. patents available 1976 to present. U.S. patent applications available 2005 to present.
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