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US Patent: 1,544,393
Arbor-press
Patentees: James Chapman Campbell (exact or similar names) - Mankato, MN Oscar Milton Hatcher (exact or similar names) - Mankato, MN USPTO Classifications: 29/251, 83/552, 83/618 Tool Categories: metalworking machines : metalworking presses : arbor presses Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Nov. 26, 1923 Granted: Jun. 30, 1925 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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