Granted Patent
Utility
US 4,282,587 · App. 06/041,061
Method for monitoring the recovery of minerals from shallow geological formations
Inventor:
Daniel Silverman
Patented Case
View Patent ↗
Granted: Aug 4, 1981
Filed: May 21, 1979
Inventor
Daniel Silverman
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.