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US Patent: 908,867
Indicator for Engines
Patentee:
William E. Jerauld (exact or similar names) - Boston, Suffolk County, MA

USPTO Classifications:
346/139R, 346/5, 384/396

Tool Categories:
propulsion and energy : steam apparatus : steam engine indicators
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: Dec. 31, 1906
Granted: Jan. 05, 1909

Patent Pictures:
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Report data errors or omissions to steward Joel Havens
The Story of the Steam Engine Indicator
"Vintage Machinery" entry for American Steam Gauge Co.

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