Granted Patent
Utility
US 4,249,920 · App. 06/093,462
Scrubber and method utilizing wetted slotted screens for removing flyash from flue gas
Inventor:
Lawrence M. Vesel
Patented Case
View Patent ↗
Granted: Feb 10, 1981
Filed: Nov 13, 1979
Inventor
Lawrence M. Vesel
Assignee (at issue)
UOP LLC
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.