Granted Patent
Utility
US 6,144,015 · App. 09/160,397
Glow sensor--ceramic flat plate
Inventors:
Randolph Kwok-Kin Chiu, David K. Chen
Patented Case
View Patent ↗
Granted: Nov 7, 2000
Filed: Sep 25, 1998
Inventors
Randolph Kwok-Kin Chiu
David K. Chen
Assignee (at issue)
General Motors LLC
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.