Granted Patent
Utility
US 4,628,222 · App. 06/585,166
Protection of saw devices comprising metallized regions on dielectric substrates
Inventor:
Meirion F. Lewis
Patented Case
View Patent ↗
Granted: Dec 9, 1986
Filed: Mar 1, 1984
Inventor
Meirion F. Lewis
Assignee (at issue)
NATIONAL RESEARCH DEVELOPMENT 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.