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US Patent: 491,543
Valve for Pumps
Patentee:
Hamlin F. Frisbie - Covington, Kenton County, KY

USPTO Classifications:
137/512.2, 417/558, 48/144

Tool Categories:
industrial machines : pumps : pump valves

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Mar. 10, 1892
Granted: Feb. 14, 1893

Patent Pictures:
USPTO pdf tiff
Google Patents
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"Vintage Machinery" entry for Frisbie Engine and Machine Co.

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