Granted Patent
Utility
US 6,378,231 · App. 09/601,104
Construction machine
Inventors:
Naoyuki Moriya, Hideto Furuta
Patented Case
View Patent ↗
Granted: Apr 30, 2002
Filed: Sep 1, 2000
Inventors
Naoyuki Moriya
Hideto Furuta
Assignee (at issue)
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.