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US Patent: 1,933,383
Gauge
Patentee: Joseph W. Motherwell (exact or similar names) - Melrose, Middlesex County, MA USPTO Classifications: 73/711, 73/736 Tool Categories: gauges : vacuum and pressure gauges Assignees: Ashton Valve Co. - Cambridge, Middlesex County, MA Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Oct. 01, 1929 Granted: Oct. 31, 1933 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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