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US Patent: 2,040,681
Gauge
Patentee:
Harry S. Baker (exact or similar names) - Arlington, Middlesex County, MA

USPTO Classifications:
73/736, 73/741

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: Aug. 12, 1931
Granted: May 12, 1936

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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