Granted Patent
Utility
US 4,782,451 · App. 07/093,604
Process for maintaining liquid supply
Inventors:
Richard B. Mazzarella, John P. Borcuch, David E. Brown
Patented Case
View Patent ↗
Granted: Nov 1, 1988
Filed: Sep 8, 1987
Inventors
Richard B. Mazzarella
John P. Borcuch
David E. Brown
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.