Granted Patent
Utility
US 4,539,434 · App. 06/513,565
Film-type electrical substrate circuit device and method of forming the device
Inventor:
Dennis L. Krause
Patented Case
View Patent ↗
Granted: Sep 3, 1985
Filed: Jul 14, 1983
Inventor
Dennis L. Krause
Assignee (at issue)
AT&T Technologies Incorporated
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.