Granted Patent
Utility
US 6,742,440 · App. 10/439,474
Servo-controlled integral stop for use with a servo-controlled hydraulic piston
Inventors:
Hugo S. Ferguson, Wei-Chang Chen
Patented Case
View Patent ↗
Granted: Jun 1, 2004
Filed: May 16, 2003
Inventors
Hugo S. Ferguson
Wei-Chang Chen
Assignee (at issue)
DYNAMIC SYSTEMS HOLDING BV
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.