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US Patent: 1,342,891
Quick-acting frame-clamping machine
Patentee: Oscar Bergstrom (exact or similar names) - Chicago, IL USPTO Classifications: 269/109, 269/112, 269/117, 269/159, 269/258 Tool Categories: work holding : clamps : miter and corner clamps Assignees: Handy Manufacturing Co. - Chicago, IL Manufacturer: Handy Manufacturing Co. - Chicago, IL Witnesses: Anna Rosenthal Dwight B. Cheever	Patent Dates: Applied: Oct. 13, 1919 Granted: Jun. 08, 1920 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Carl Matthews "Vintage Machinery" entry for Handy Manufacturing Co.

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