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US Patent: 1,348,148
Chair-clamp
Patentee: Oscar Bergstrom (exact or similar names) - Chicago, IL USPTO Classifications: 269/106, 269/139, 269/222, 269/258 Tool Categories: work holding : clamps Assignees: Handy Manufacturing Co. - Chicago, IL Manufacturer: Handy Manufacturing Co. - Chicago, IL Witnesses: Minnie Sternberg Dwight B. Cheever	Patent Dates: Applied: Nov. 17, 1919 Granted: Aug. 03, 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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