In 1887, Edison he sold his U. S. patent rights to a Pittsburgh millionaire named Jesse h.

1887年，爱迪生将留声机在美国的专利权卖给了一位匹兹堡富豪杰西•h•利平科特Jesse H。

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In 1887, Edison he sold his U. S. patent rights to a Pittsburgh millionaire named Jesse h.

1887年，爱迪生将留声机在美国的专利权卖给了一位匹兹堡富豪杰西•h•利平科特Jesse H。

youdao