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US Patent: 6,021X
Steam safety valve (Boiler detector)
Preventing explosion of steam boilers by detector
Patentee:
Thomas Ewbank (exact or similar names) - New York, NY

USPTO Classifications:
137/213

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Granted: Jun. 08, 1830

Patent Pictures:
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Report data errors or omissions to steward Joel Havens
Description:
Most of the patents prior to 1836 were lost in the Dec. 1836 fire. Only about 2,000 of the almost 10,000 documents were recovered. Little is known about this patent. Only the patent drawing is available. This patent is in the database for reference only.

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