Granted Patent
Utility
US 6,701,822 · App. 10/244,074
Independent and regenerative mode fluid control system
Inventors:
Thomas J. Hajek, Jr., Srikrishnan T. Tolappa, James D. Linderode
Patented Case
View Patent ↗
Granted: Mar 9, 2004
Filed: Sep 16, 2002
Inventors
Thomas J. Hajek, Jr.
Srikrishnan T. Tolappa
James D. Linderode
Assignees (at issue)
Caterpillar Inc.
Shin Caterpillar Mitsubishi Ltd.
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.