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US Patent: 1,498,861
Water Column
Patentee: William Oliver Ashe (exact or similar names) - Yonkers, Weschester County, NY USPTO Classifications: 73/297 Tool Categories: transportation : railroads : railroad locomotives : boiler water gauges Assignees: Nathan Mfg. Co. - New York, NY Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jun. 16, 1921 Granted: Jun. 24, 1924 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Nathan Mfg. Co.
Description: Original application filed 16 Jun., 1921. Divided and this application filed 14 Sept., 1922.

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