Granted Patent
Utility
US 4,250,964 · App. 06/094,756
Process for recovering carbonaceous organic material from a subterranean formation
Inventors:
Douglas M. Jewell, William G. Moon
Patented Case
View Patent ↗
Granted: Feb 17, 1981
Filed: Nov 15, 1979
Inventors
Douglas M. Jewell
William G. Moon
Assignee (at issue)
Gulf Research & Development 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.