Granted Patent
Utility
US 4,302,270 · App. 06/212,989
Method of bonding an ultrafiltration membrane assembly
Inventor:
Robert D. Nicolet
Patented Case
View Patent ↗
Granted: Nov 24, 1981
Filed: Dec 4, 1980
Inventor
Robert D. Nicolet
Assignee (at issue)
Dorr-Oliver Incorporated
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.