Granted Patent
Utility
US 5,084,899 · App. 06/213,170
Signal suppressors
Inventor:
David Harrington
Patented Case
View Patent ↗
Granted: Jan 28, 1992
Filed: Nov 28, 1980
Inventor
David Harrington
Assignee (at issue)
Siemens Plessey Electronic Systems 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.