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Patent number:
Patent Date:
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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