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US Patent: 529,634
Power Hammer
Patentees: James Bernard Sweeney (exact or similar names) - St. Johnsbury, Caledonia County, VT Robert Wallace Laird (exact or similar names) - St. Johnsbury, Caledonia County, VT USPTO Classifications: 72/433, 72/441 Tool Categories: metalworking machines : forging machines : power hammers Assignees: Laird & Sweeney Mfg. Co. - St. Johnsbury, Caledonia County, VT Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Mar. 03, 1894 Granted: Nov. 20, 1894 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Laird & Sweeney Mfg. Co.

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