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US Patent: 1,000,944
Concrete composition
Patentee: John M. Rauhoff (exact or similar names) - Tinley Park, IL USPTO Classifications: 106/643 Tool Categories: Assignees: Ironite Co. - Chicago, IL Manufacturer: Not known to have been produced Witnesses: L. B. Coupland Vail R. Bucklin	Patent Dates: Applied: Aug. 23, 1909 Granted: Aug. 15, 1911 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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