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US Patent: 447,719
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Patentee: Francis H. Richards (exact or similar names) - Hartford, Hartford County, CT USPTO Classifications: 235/113, 235/141 Tool Categories: agricultural : grain scales Assignees: Pratt & Whitney Co. - Hartford, Hartford County, CT Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Sep. 20, 1890 Granted: Mar. 03, 1891 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Pratt, Whitney & Co.

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