Granted Patent
Utility
US 5,680,109 · App. 08/669,901
Impulse line blockage detector systems and methods
Inventors:
Justin Lowe, David W. Clarke
Patented Case
View Patent ↗
Granted: Oct 21, 1997
Filed: Jun 21, 1996
Inventors
Justin Lowe
David W. Clarke
Assignee (at issue)
Fox Boro 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.