Granted Patent
Utility
US 4,866,378 · App. 07/146,823
Displacement transducer with opposed coils for improved linearity and temperature compensation
Inventor:
Robert W. Redlich
Patented Case
View Patent ↗
Granted: Sep 12, 1989
Filed: Jan 22, 1988
Inventor
Robert W. Redlich
Assignee (at issue)
SUNPOWER 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.