Granted Patent
Utility
US 4,774,270 · App. 07/063,960
Coating for EMI shielding
Inventors:
F. Ryan Sullivan, David M. Aleska
Patented Case
View Patent ↗
Granted: Sep 27, 1988
Filed: Jun 19, 1987
Inventors
F. Ryan Sullivan
David M. Aleska
Assignee (at issue)
B. F. Goodrich Company
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.