Granted Patent
Utility
US 5,144,801 · App. 07/345,156
Electro-hydraulic actuator system
Inventors:
Dino C. Scanderbeg, William D. Wilkerson, Richard L. Kenyon, Michael Nolan
Patented Case
View Patent ↗
Granted: Sep 8, 1992
Filed: Apr 28, 1989
Inventors
Dino C. Scanderbeg
William D. Wilkerson
Richard L. Kenyon
Michael Nolan
Assignee (at issue)
Parker-Hannifin Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.