Granted Patent
Utility
US 4,772,509 · App. 07/037,713
Printed circuit board base material
Inventors:
Ichiro Komada, Minoru Hatakeyama
Patented Case
View Patent ↗
Granted: Sep 20, 1988
Filed: Apr 13, 1987
Inventors
Ichiro Komada
Minoru Hatakeyama
Assignee (at issue)
Japan Gore-Tex Inc.
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.