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US Patent: 2,389,536
Chuck
Patentee: Charles A. Palmgren (exact or similar names) - Chicago, IL USPTO Classifications: 279/60 Tool Categories: woodworking tools : hand drills : drill chucks Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Oct. 23, 1943 Granted: Nov. 20, 1945 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Palmgren Steel Products, Inc.

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