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CA Patent: CA-851,502
Backhoe hydraulic control system
Patentee: Wallace J. Witwer (exact or similar names) - Waukesha, WI USPTO Classifications: Tool Categories: Assignees: Hein-Werner Corp. - Waukesha, WI Manufacturer: Hein-Werner Corp. - Waukesha, WI Witnesses: Unknown	Patent Dates: Granted: Sep. 15, 1970 Patent Pictures: CIPO Data Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Hein-Werner Corp.

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