Granted Patent
Utility
US 4,520,109 · App. 06/475,001
Fluorocarbon tracers and tracing method
Inventors:
Peter Simmonds, Robert E. Moore
Patented Case
View Patent ↗
Granted: May 28, 1985
Filed: Mar 14, 1983
Inventors
Peter Simmonds
Robert E. Moore
Assignee (at issue)
SUN-TECH 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.