Granted Patent
Utility
US 6,188,171 · App. 09/333,641
Cathode-ray tube contact spring
Inventor:
Kelly Eugene Hamm
Patented Case
View Patent ↗
Granted: Feb 13, 2001
Filed: Jun 15, 1999
Inventor
Kelly Eugene Hamm
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.