Granted Patent
Utility
US 4,280,902 · App. 06/164,918
Separation of dense impurities from a fluid
Inventors:
Finn Jacobsen, Lennart Gustavsson
Patented Case
View Patent ↗
Granted: Jul 28, 1981
Filed: Jun 30, 1980
Inventors
Finn Jacobsen
Lennart Gustavsson
Assignee (at issue)
Kamyr, Inc.
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.