Manufacturer

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mid 16th century (as noun, denoting something made by hand): from French (re-formed by association with Latin manu factum ‘made by hand’), from Italian manifattura . The verb dates from the mid 17th century.

wiktionary

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manufacture +‎  -er

etymonline

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manufacturer (n.)

1719, "worker in a manufacturing establishment," agent noun from manufacture (v.). Meaning "one who employs workers in manufacturing" is from 1752.