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US Patent: 793,947
Steam Safety Valve
Patentees:
Joshua H. Millett (exact or similar names) - Malden, Middlesex County, MA
Frederick A. Hannah (exact or similar names) - Medford, Middlesex County, MA

USPTO Classifications:
137/516.25, 137/543.19

Tool Categories:
propulsion and energy : steam apparatus : steam safety valves

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

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Jun. 29, 1904
Granted: Jul. 04, 1905

Patent Pictures:
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Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Crosby Steam Gage & Valve Co.

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