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US Patent: 473,582
Screw-cutting plate
Patentee: Henry B. Keiper (exact or similar names) - Lancaster, PA USPTO Classifications: 33/199R, 408/162, 408/163 Tool Categories: Assignees: None Manufacturer: Champion Blower & Forge Co. - Lancaster, PA Witnesses: Daniel H. Herr Edwin Bookmyer	Patent Dates: Applied: Sep. 09, 1891 Granted: Apr. 26, 1892 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Champion Blower & Forge Co.

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