Granted Patent
Utility
US 5,508,089 · App. 08/253,855
Multiple substrate and process for its production
Inventor:
Jurgen Schulz-Harder
Patented Case
View Patent ↗
Granted: Apr 16, 1996
Filed: Jun 3, 1994
Inventor
Jurgen Schulz-Harder
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.