John F Keidel, Age 49PO Box 279, Detroit Lakes, MN 56502

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Detroit Lakes, MN

14454 County Highway 14, Lake Park, MN 56554

Frazee, MN

Becker, MN

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John Keidel

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Barcode System

The first commercially successful barcode reading system was invented (US Patent 3479519) in November 1969 by John F. Keidel for the General Atronics Corp. ...

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