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US Patent: D58,477
Design for a pressure-indicating gauge
Patentee: Charles Gaston (exact or similar names) - Chicago, IL USPTO Classifications: D10/127, D10/53, D10/85 Tool Categories: Assignees: Ashton Valve Co. - Boston, MA Manufacturer: Ashton Valve Co. - Boston, MA Witnesses: Unknown	Patent Dates: Applied: Jun. 24, 1920 Granted: Jul. 26, 1921 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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