Granted Patent
Utility
US 4,523,119 · App. 06/625,590
Application of lithium tetraborate to saw devices
Inventors:
Roger W. Whatmore, Iain McEwing Young
Patented Case
View Patent ↗
Granted: Jun 11, 1985
Filed: Jun 29, 1984
Inventors
Roger W. Whatmore
Iain McEwing Young
Assignee (at issue)
Plessey Overseas Limited
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.