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US Patent: 1,432,636
Duplex Pumping Engine
Patentee: Francis E. Stevenson (exact or similar names) - Mount Gilead, Morrow County, OH USPTO Classifications: 91/190, 91/54 Tool Categories: water distribution systems : pumps Assignees: Hydraulic Press Mfg. Co. - Mount Gilead, Morrow County, OH Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Feb. 19, 1921 Granted: Oct. 17, 1922 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Hydraulic Press Mfg. Co.

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