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Very interesting history, even ignoring European developments.


Walter Hunt, Elias Howe, Walter Hunt and Isaac Singer all contributed. To solve patent disputes, the various claimants pooled their patents, and a royalty was paid to Howe for every machine made.


Howe grew up in MA, apprenticed at the Lowell mills, and was issued an uncontested patent in 1846. There had been a much earlier development of a lock stitch machine but the inventor, Walter Hunt, did not submit a patent application until later.


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