Granted Patent
Utility
US 4,696,854 · App. 06/915,511
Bilayer substrate
Inventor:
Dolores O. Ethier
Patented Case
View Patent ↗
Granted: Sep 29, 1987
Filed: Oct 6, 1986
Inventor
Dolores O. Ethier
Assignee (at issue)
LecTec 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.