Granted Patent
Utility
US 5,950,426 · App. 08/930,410
Hydraulic circuit for hydraulic machine
Inventors:
Izuru Morita, Ryuzo Maeda, Toshiyuki Shigeta
Patented Case
View Patent ↗
Granted: Sep 14, 1999
Filed: Oct 28, 1997
Inventors
Izuru Morita
Ryuzo Maeda
Toshiyuki Shigeta
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.