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Patent number:
Patent Date:
US Patent: 829,552
Pressure Gage
Patentee:
George Spencer (
exact
or
similar
names) - Medford, Middlesex County, MA
USPTO Classifications:
73/740
Tool Categories:
gauges
:
vacuum and pressure gauges
Assignees:
Crosby Steam Gage & Valve Co.
- Boston, Suffolk County, MA
Manufacturer:
Not known to have been produced
Witnesses:
Unknown
Patent Dates:
Applied:
Mar. 31, 1905
Granted:
Aug. 28, 1906
Patent Pictures:
USPTO
(New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Crosby Steam Gage & Valve Co.
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