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US Patent: 2,012,550
Viscosometer
Patentee: Richard Powis (exact or similar names) - Buffalo, Erie County, NY USPTO Classifications: 137/468, 236/93R, 73/54.04 Tool Categories: gauges : flow gauges Assignees: Sterling Engine Co. - Buffalo, Erie County, NY Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Dec. 11, 1833 Granted: Aug. 27, 1935 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Sterling Engine Co.

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