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US Patent: 1,633,793
Gear pump
Patentee: Frederic Porst (exact or similar names) - Chicago, IL USPTO Classifications: 418/190 Tool Categories: Assignees: Hardinge Brothers, Inc. - Chicago, IL Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Granted: Jun. 28, 1927 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Hardinge Brothers

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