Granted Patent
Utility
US 6,378,024 · App. 09/259,903
Reduced microprocessor apparatus and method for device control system using impedance isolating expansion circuit
Inventor:
Qiang Huang
Patented Case
View Patent ↗
Granted: Apr 23, 2002
Filed: Feb 26, 1999
Inventor
Qiang Huang
Assignees (at issue)
SONY GROUP CORPORATION
SONY ELECTRONICS INC.
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.