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US Patent: 661,874
Double Cylinder Pump
Patentee:
Warren Hull - Gasport, Niagara County, NY

USPTO Classifications:
417/536, 417/544, 92/138, 92/151

Tool Categories:
industrial machines : pumps : hand pumps

Assignees:
Warren Hull - Gasport, Niagara County, NY
Arthur B. Hull - Gasport, Niagara County, NY
John C. Hull - Gasport, Niagara County, NY

Manufacturer:
Friend Mfg. Co. - Gasport, Niagara County, NY

Witnesses:
J. D. Northrup
M. A. Mesler
Jason K. McCathran
Louis G. Julihn

Patent Dates:
Applied: May 15, 1900
Granted: Nov. 13, 1900

Patent Pictures: [ 1 | 2 ]
USPTO pdf tiff
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"Vintage Machinery" entry for Friend Mfg. Co.

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