Granted Patent
Utility
US 4,517,572 · App. 06/402,620
System for reducing blocking in an antenna switching matrix
Inventor:
Thomas Dixon
Patented Case
View Patent ↗
Granted: May 14, 1985
Filed: Jul 28, 1982
Inventor
Thomas Dixon
Assignee (at issue)
Amstar 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.