Granted Patent
Utility
US 6,715,403 · App. 10/244,077
Independent and regenerative mode fluid control system
Inventors:
Thomas J. Hajek, Jr., Srikrishnan T. Tolappa
Patented Case
View Patent ↗
Granted: Apr 6, 2004
Filed: Sep 16, 2002
Inventors
Thomas J. Hajek, Jr.
Srikrishnan T. Tolappa
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.