Granted Patent
Utility
US 4,496,794 · App. 06/617,821
Flexible base materials, their preparation and their use for printed circuits
Inventors:
Roland Darms, Harry Beyeler, Theobald Haug
Patented Case
View Patent ↗
Granted: Jan 29, 1985
Filed: Jun 4, 1984
Inventors
Roland Darms
Harry Beyeler
Theobald Haug
Assignee (at issue)
Ciba-Geigy
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.