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US Patent: 125,390
Improvement in cements for artificial stones
Patentee: J. Andrew Henshaw (exact or similar names) - Cambridge, MA USPTO Classifications: 106/31.11, 106/32.5, 106/635 Tool Categories: Assignees: Union Stone Co. - Boston, MA Manufacturer: Not known to have been produced Witnesses: Charles P. Gorely William W. Swan	Patent Dates: Granted: Apr. 09, 1872 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Union Stone Co.

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