Granted Patent
Utility
US 5,672,887 · App. 08/704,103
Optical detector for air in fluid line the same
Inventors:
Benjamin G. Shaw, Tony Lillios
Patented Case
View Patent ↗
Granted: Sep 30, 1997
Filed: Aug 28, 1996
Inventors
Benjamin G. Shaw
Tony Lillios
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.