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US Patent: 1,848,489
Pressure gauge
Patentee: Joseph W. Motherwell (exact or similar names) - Melrose, Middlesex County, MA USPTO Classifications: 73/736 Tool Categories: gauges : vacuum and pressure gauges Assignees: Ashton Valve Co. - Cambridge, Middlesex County, MA Manufacturer: Ashton Valve Co. - Boston, Middlesex County, MA Witnesses: Unknown	Patent Dates: Applied: Feb. 01, 1926 Granted: Mar. 08, 1932 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Ashton Valve Co.

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