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US Patent: 3,476,274
Backhoe hydraulic control system
Patentee: Wallace J. Witwer (exact or similar names) - Waukesha, WI USPTO Classifications: 414/694 Tool Categories: Assignees: Hein-Werner Corp. - Waukesha, WI Manufacturer: Hein-Werner Corp. - Waukesha, WI Witnesses: Unknown	Patent Dates: Applied: Feb. 02, 1968 Granted: Nov. 04, 1969 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Hein-Werner Corp.

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