In reference to the patent: US465972

I've noticed that this Google Patents page lists the filing date of a patent as Apr 10, 1839, but that's before the inventor, Thomas Edison, was born. How could this be?


Filing date mentioned in Google Patent is wrong, actual filing year is 1889 actual pdf file contains correct date.

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due to error in OCR software it is incorrectly mentioned as 1939.

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