Granted Patent
Utility
US 4,466,989 · App. 06/497,989
Horizontal mobility in fluidized beds
Inventors:
Albert H. Haller, Eckart Schütz
Patented Case
View Patent ↗
Granted: Aug 21, 1984
Filed: May 25, 1983
Inventors
Albert H. Haller
Eckart Schütz
Assignee (at issue)
AT&T Technologies Incorporated
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.