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US Patent: 45,896
Atmospheric Hammer
Patentee: William Dakin Grimshaw (exact or similar names) - Birmingham, Warwick County, England USPTO Classifications: 173/75, 91/335 Tool Categories: metalworking machines : forging machines : power hammers Assignees: None Manufacturer: Thomas Whitfield and Co. - Birmingham, Warwick County, England Witnesses: Edward Joseph Hughes John Bloodworth Charles Edward Horez James T. Graham	Patent Dates: Granted: Jan. 10, 1865 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Thomas Whitfield & Co.
Description: See also patent #GB-186400206.

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