Granted Patent
Utility
US 4,462,465 · App. 06/393,064
Controlling injection of fluids into wells
Inventor:
Cynthia E. Strickland
Patented Case
View Patent ↗
Granted: Jul 31, 1984
Filed: Jun 28, 1982
Inventor
Cynthia E. Strickland
Assignee (at issue)
Otis Engineering 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.