Granted Patent
Utility
US 4,398,852 · App. 06/235,195
Process and apparatus for adding and removing particles from pressurized reactors
Inventor:
John Milligan
Patented Case
View Patent ↗
Granted: Aug 16, 1983
Filed: Feb 17, 1981
Inventor
John Milligan
Assignee (at issue)
HRI
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.