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US Patent: 3,391,863
Data card punching device
Patentees: Harold W. Huffman (exact or similar names) - Hamilton, OH Robert W. Morner (exact or similar names) - Hamilton, OH USPTO Classifications: 234/116, 234/61, 474/156 Tool Categories: Assignees: Hamilton Tool Co. - Hamilton, OH Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Aug. 06, 1965 Granted: Jul. 09, 1968 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Hamilton Tool Co.

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