Granted Patent
Utility
US 4,467,531 · App. 06/367,201
Method and apparatus for controlling the discharge of particulate solids from an expanded bed of such solids
Inventor:
James L. Skinner
Patented Case
View Patent ↗
Granted: Aug 28, 1984
Filed: Apr 12, 1982
Inventor
James L. Skinner
Assignee (at issue)
Atlantic Richfield 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.