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US Patent: 957,471
Pressure Gage
Patentee:
Coleman J. Manning (exact or similar names) - Medford, Middlesex County, MA

USPTO Classifications:
177/208, 73/743

Tool Categories:
gauges : vacuum and pressure gauges
industrial tools : pressure indicators

Assignees:
American Steam Gauge & Valve Mfg. Co. - Boston, Suffolk County, MA

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Jan. 26, 1909
Granted: May 10, 1910

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for American Steam Gauge Co.

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