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US Patent: 1,822,697
Sheet-metal working machine
Patentee: Paul R. Hahnemann (exact or similar names) - Buffalo, NY USPTO Classifications: 192/69, 192/83, 72/105, 72/247, 72/248, 72/249 Tool Categories: metalworking machines : sheet metal : beading machines metalworking machines : sheet metal : cutting and trimming machines metalworking machines : sheet metal : sheet metal forming rolls Assignees: Niagara Machine & Tool Works - Buffalo, NY Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Oct. 04, 1929 Granted: Sep. 08, 1931 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Niagara Machine & Tool Works
Description: The invention is a "power-operated metal working machine for beading, turning, cutting, or slitting sheet metal."

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