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US Patent: 3,822,966
Hydraulic pump
Patentee: Samuel B. McClocklin (exact or similar names) - Owatonna, Steele County, MN USPTO Classifications: 254/93H, 417/311, 417/568 Tool Categories: industrial machines : pumps : hydraulic pumps Assignees: Owatonna Tool Co. - Owatonna, Steele County, MN Manufacturer: Owatonna Tool Co. - Owatonna, Steele County, MN Witnesses: Unknown	Patent Dates: Applied: Oct. 26, 1972 Granted: Jul. 09, 1974 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Owatonna Tool Co. (OTC)
Description: This patent number was seen in a 1979 OTC catalog for their Model P12 and P58 manually operated pumps, which are capable of delivering 10,000 psi.

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