Granted Patent
Utility
US 4,819,374 · App. 06/708,110
Thermoplastic films for soil treatment
Inventor:
Gregory Gemgnani
Patented Case
View Patent ↗
Granted: Apr 11, 1989
Filed: Mar 5, 1985
Inventor
Gregory Gemgnani
Assignee (at issue)
Mobil Oil Corporation
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.