Granted Patent
Utility
US 4,484,158 · App. 06/395,986
Monolithic crystal filter and method of manufacturing same
Inventors:
Gerald E. Roberts, Alfred G. Staples
Patented Case
View Patent ↗
Granted: Nov 20, 1984
Filed: Jul 7, 1982
Inventors
Gerald E. Roberts
Alfred G. Staples
Assignee (at issue)
General Electric 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.