Granted Patent
Utility
US 4,213,044 · App. 05/970,246
Method and apparatus for determining oil mist in compressed air
Inventor:
Kenneth A. Perrotta
Patented Case
View Patent ↗
Granted: Jul 15, 1980
Filed: Dec 18, 1978
Inventor
Kenneth A. Perrotta
Assignee (at issue)
Whatman Reeve Angel Limited
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.