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US Patent: 367,374
Rotary pump
Patentee: Frank B. Deming (exact or similar names) - Salem, OH USPTO Classifications: 418/126 Tool Categories: Assignees: Silver & Deming Mfg. Co. - Salem, OH Manufacturer: Not known to have been produced Witnesses: Robert Hale W. W. Hale	Patent Dates: Applied: Oct. 15, 1886 Granted: Aug. 02, 1887 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Silver & Deming Mfg. Co.

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