Granted Patent
Utility
US 4,952,308 · App. 06/939,997
Pressurized flotation module and method for pressurized foam separation
Inventors:
Jeffrey Chamberlin, Michael A. McCool
Patented Case
View Patent ↗
Granted: Aug 28, 1990
Filed: Dec 10, 1986
Inventors
Jeffrey Chamberlin
Michael A. McCool
Assignee (at issue)
Beloit 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.