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US Patent: 673,483
Machine for cutting picture-mats
Patentee: Charles I. Shawver (exact or similar names) - Springfield, OH USPTO Classifications: 83/523, 83/565 Tool Categories: Assignees: None Manufacturer: Not known to have been produced Witnesses: Irvine Miller William O'Laughlin	Patent Dates: Applied: Jul. 28, 1900 Granted: May 07, 1901 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Shawver Co.
Description: The inventor also patented twist machines, which he manufactured as the Shawver Co. of Springfield, OH.

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