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US Patent: 584,592
Piston-pump
Patentee: Edward E. Johnson (exact or similar names) - Chicago, IL USPTO Classifications: 220/327, 92/140, 92/168 Tool Categories: Assignees: Deming Co. - Salem, OH Manufacturer: Not known to have been produced Witnesses: Henry W. Carter Willis D. Shafer	Patent Dates: Applied: May 04, 1896 Granted: Jun. 15, 1897 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin
Description: In 1890, woodworking machinery maker Silver & Deming split into Silver Mfg. Co. and The Deming Co. The woodworking machinery line went to Silver.

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