Granted Patent
Utility
US 5,160,905 · App. 07/734,382
High dielectric micro-trough line filter
Inventor:
Truc Hoang
Patented Case
View Patent ↗
Granted: Nov 3, 1992
Filed: Jul 22, 1991
Inventor
Truc Hoang
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.