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GB Patent: GB-191,412,706
Improvements in Pneumatic Hammers
Patentees: Percy William Allday (exact or similar names) - Birmingham, Warwick County, England Philip John Wilson (exact or similar names) - Birmingham, Warwick County, England USPTO Classifications: Tool Categories: metalworking machines : forging machines : power hammers Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Granted: Mar. 25, 1915 Patent Pictures: Espacenet patent Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for William Allday & Co.

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