Granted Patent
Utility
US 5,639,556 · App. 08/544,320
Conductive ink
Inventor:
Michel Gaumet
Patented Case
View Patent ↗
Granted: Jun 17, 1997
Filed: Oct 17, 1995
Inventor
Michel Gaumet
Assignee (at issue)
Solaic
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.