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US Patent: 302,811
Trip-hammer
Patentee: John R. Abbe (exact or similar names) - Manchester, NH USPTO Classifications: 72/438, 72/466.8 Tool Categories: metalworking machines : forging machines : trip and helve hammers Assignees: None Manufacturer: Not known to have been produced Witnesses: Edward W. Pillsbury Enoch B. Aiken	Patent Dates: Applied: Aug. 06, 1883 Granted: Jul. 29, 1884 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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