Granted Patent
Utility
US 4,965,537 · App. 07/452,077
Tuneless monolithic ceramic filter manufactured by using an art-work mask process
Inventor:
Richard S. Kommrusch
Patented Case
View Patent ↗
Granted: Oct 23, 1990
Filed: Dec 18, 1989
Inventor
Richard S. Kommrusch
Assignee (at issue)
Motorola, Inc.
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.