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US Patent: 2,973,188
Mixing Apparatus
Patentee: Russell Rex Howe (exact or similar names) - Tonawanda, NY USPTO Classifications: 172/49, 172/531, 416/122, 416/241R, 416/81 Tool Categories: Assignees: Keystone Mfg. Co. - Buffalo, NY Manufacturer: Not known to have been produced Witnesses: none listed	Patent Dates: Applied: Jun. 06, 1957 Granted: Feb. 28, 1961 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens
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