Granted Patent
Utility
US 4,499,035 · App. 06/201,770
Gas-liquid contacting tray with improved inlet bubbling means
Inventors:
Robert D. Kirkpatrick, David W. Weiler
Patented Case
View Patent ↗
Granted: Feb 12, 1985
Filed: Oct 29, 1980
Inventors
Robert D. Kirkpatrick
David W. Weiler
Assignee (at issue)
Union Carbide 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.