Granted Patent
Utility
US 4,316,728 · App. 06/176,377
Entrainment separator
Inventor:
Michael B. Caesar
Patented Case
View Patent ↗
Granted: Feb 23, 1982
Filed: Aug 8, 1980
Inventor
Michael B. Caesar
Assignee (at issue)
Occidental Research 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.