Granted Patent
Utility
US 6,022,756 · App. 09/127,291
Metal diaphragm sensor with polysilicon sensing elements and methods therefor
Inventors:
Douglas Ray Sparks, Andres Viduya, Lewis Henry Little, Marion Edmond Ellis
Patented Case
View Patent ↗
Granted: Feb 8, 2000
Filed: Jul 31, 1998
Inventors
Douglas Ray Sparks
Andres Viduya
Lewis Henry Little
Marion Edmond Ellis
Assignee (at issue)
DELCO ELECTRONICS CORPORATION
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.