DC

Douglas C. Campbell

Ford: 4 patents #4,025 of 17,473Top 25%
General Motors: 3 patents #4,693 of 18,328Top 30%
Overall (All Time): #427,884 of 4,157,543Top 15%
12
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
6190090 Apparatus for use in a pipeline Charles Robert Knights, Brian Wilson Varney 2001-02-20
6120479 Auto-destruct disposable syringe Peter R. Frise, Frank Johnson 2000-09-19
5593176 Ride height setting based on transfer case setting Gary Gloceri, Daniel M. McCoy, Thomas G. Reichenbach, Lenard J. Duchnowski, Jerome Charles Ivan +1 more 1997-01-14
5570287 Speed dependent suspension control Gary Gloceri, Daniel M. McCoy 1996-10-29
5555173 Damping factor switching in vehicle shock absorbers Gary Gloceri, Daniel M. McCoy 1996-09-10
5517847 Open compartment load leveling ride height control Gary Gloceri, Daniel M. McCoy 1996-05-21
5208936 Variable speed pig for pipelines 1993-05-11
5186487 Selectable damping vehicle suspension control responsive to engine torque Fred Wood, David C. Poirier, Howard Hans Ludwig, Patrick J. Westphal 1993-02-16
5163702 Selectable damping vehicle suspension control Fred Wood, Howard Hans Ludwig, Patrick J. Westphal, David C. Poirier 1992-11-17
5163705 Selectable damping vehicle suspension control responsive to transmission shift Howard Hans Ludwig, Fred Wood, David C. Poirier, Patrick J. Westphal 1992-11-17
4991651 Pipeline packer for plugging a pipeline at a desired location 1991-02-12
4854384 Pipeline packer 1989-08-08