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Patents for Wallace J. Witwer
Patents 1 - 9 of 9
First set of recordsLast set of records
PictureNumberDatePatenteeTitle
3,396,860Aug. 13, 1968W.J. Witwer, J.V. WrightExcavator and grader or crane apparatus
  3,426,926Feb. 11, 1969W.J. WitwerHydraulic system for use with telescopic boom apparatus
  3,451,560Jun. 24, 1969W.J. WitwerRemote control system
  CA-821,931Sep. 02, 1969W.J. WitwerHydraulic system for use with telescopic boom apparatus
  CA-822,521Sep. 09, 1969W.J. Witwer, J.V. WrightExcavator and grader or crane apparatus
  3,476,274Nov. 04, 1969W.J. WitwerBackhoe hydraulic control system
  CA-851,502Sep. 15, 1970W.J. WitwerBackhoe hydraulic control system
  3,589,539Jun. 29, 1971W.J. WitwerBackhoe having an articulated gooseneck boom
  CA-886,375Nov. 23, 1971W.J. WitwerRemote control system
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