Granted Patent
Utility
US 6,263,842 · App. 09/517,144
Hydraulically-assisted engine valve actuator
Inventors:
William de Ojeda, Pranab Das
Patented Case
View Patent ↗
Granted: Jul 24, 2001
Filed: Mar 2, 2000
Inventors
William de Ojeda
Pranab Das
Assignee (at issue)
International Truck and Engine Corporation Canada
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.