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US Patent: 155,473
Improvement in cement-lined pipes
Patentee: Nathan Stephens (exact or similar names) - Brooklyn, NY USPTO Classifications: 138/146 Tool Categories: water distribution systems : pipes Assignees: Melvin Stephens - Brooklyn, NY Manufacturer: Not known to have been produced Witnesses: Charles H. Smith George T. Pinckney	Patent Dates: Applied: Apr. 22, 1874 Granted: Sep. 29, 1874 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Stephens Patent Vise Co.

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