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Patent number:
Patent Date:
US Patent: 689,529
Recording Gage
Patentee:
Frank L. Wolfe (
exact
or
similar
names) - Medford, Middlesex County, MA
USPTO Classifications:
346/12
,
346/140.1
,
346/72
Tool Categories:
propulsion and energy
:
steam apparatus
:
steam engine indicators
industrial machines
:
industrial recording apparatus
Assignees:
Crosby Steam Gage & Valve Co.
- Boston, Suffolk County, MA
Manufacturer:
Not known to have been produced
Witnesses:
Unknown
Patent Dates:
Applied:
Mar. 14, 1900
Granted:
Dec. 24, 1901
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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