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US Patent: 577,531
Drop Hammer
Patentee: Frank Lombard (exact or similar names) - Hartford, Hartford County, CT USPTO Classifications: 72/436, 72/439 Tool Categories: Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Sep. 21, 1896 Granted: Feb. 23, 1897 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Billings & Spencer Co.

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