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What did Samuel O'Reilly invent?

Tattoo gun

Electric curler

Microphone

Pneumatic hammer

The electric tattooing machine was officially patented on Dec. 8th, 1891 by a New York tattoo artist named Samuel O'Reilly. He began tattooing in New York around the mid-1880s. O'Reilly's machine was based on the rotary technology of Thomas Edison's autographic printing pen.

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