Granted Patent
Utility
US 4,999,049 · App. 07/220,671
Thick film electrically resistive track material
Inventors:
Simon N. Balderson, Alan R. Atterbury
Patented Case
View Patent ↗
Granted: Mar 12, 1991
Filed: Jul 18, 1988
Inventors
Simon N. Balderson
Alan R. Atterbury
Assignee (at issue)
Thorn EMI plc
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.