Science on the 30th of September 1890 in history

Science

Date	Type	Text
30 Sep 1890 Edison patents	science	Edison patents In 1890, Thomas A. Edison was granted U.S. patent No. 437422 for telegraphy, Nos. 437423,-4,-6 for a phonograph; No. 437425 for a phonograph-recorder; No. 437427 for a "Method of Making Phonograph Blanks"; No. 437428 for a "Propelling Device for Electrical Cars"; and No. 437429 for a phonogram blank.	0

29th September 1890 1st October 1890

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Science on the 30th of September 1890 in history

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