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US Patent: 117,410
Improvement in concaves for thrashing-machines
Patentee: Charles S. Hall (exact or similar names) - Rochester, NY USPTO Classifications: 460/110, 460/122 Tool Categories: agricultural : threshers and thrashers Assignees: None Manufacturer: Not known to have been produced Witnesses: C. H. Clark F. H. Clement	Patent Dates: Granted: Jul. 25, 1871 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Frank H. Clement

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