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US Patent: 1,268,143
Filing device
Patentee: Carl A. Palmgren (exact or similar names) - Chicago, IL USPTO Classifications: 211/126.13, 211/162, 40/374 Tool Categories: Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: May 31, 1917 Granted: Jun. 04, 1918 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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