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US Patent: 713,611
Steam Engine Indicator
Patentee:
Theodore Davidson (exact or similar names) - Salem, Essex County, MA

USPTO Classifications:
346/5

Tool Categories:
propulsion and energy : steam apparatus : steam engine indicators

Assignees:
Crosby Steam Gage & Valve Co. - Boston, Suffolk County, MA

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: May 10, 1901
Granted: Nov. 18, 1902

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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