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US Patent: 155,093
Improvement in steam-boilers
Patentee:
John L. Knowlton - Sharon Hill, PA

USPTO Classifications:
122/118

Tool Categories:
propulsion and energy : steam apparatus : stationary boilers

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
James L. Ewin
Octavius Knight

Patent Dates:
Applied: May 02, 1874
Granted: Sep. 15, 1874

Patent Pictures:
USPTO pdf tiff
Google Patents
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"Vintage Machinery" entry for Knowlton, Smith & Co.

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