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There wasn't a patent office until 1900's.

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7y ago

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Alexander Graham Bell had 18 patents issued to him only, and 12 issued to him and collaborators.


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In the USA alone there have been over 8,300,000 patents issued. Add to these all of the other patents in all of the other countries and you will have your answer.


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List 3 pieces farm machinery patented from 1800 to 1860?

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