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US Patent: 115,029
Improvement in cement-pipe
Patentee: David Copeland, Jr. (exact or similar names) - Rochester, NY USPTO Classifications: 249/100, 249/145 Tool Categories: Assignees: None Manufacturer: Not known to have been produced Witnesses: D. L. Johnston F. H. Clement	Patent Dates: Granted: May 23, 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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