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Patent number:
Patent Date:
US Patent: 1,480,684
Spring Link
Patentee:
William S. Hudson (
exact
or
similar
names) - West Medford, Middlesex County, MA
USPTO Classifications:
74/594
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. 19, 1922
Granted:
Jan. 15, 1924
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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