Granted Patent
Utility
US 5,141,535 · App. 07/650,032
Apparatus for separating gas from a suspension
Inventor:
Jorma Elonen
Patented Case
View Patent ↗
Granted: Aug 25, 1992
Filed: Feb 4, 1991
Inventor
Jorma Elonen
Assignee (at issue)
A. Ahlstrom 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.