Granted Patent
Utility
US 4,512,892 · App. 06/121,561
Method and structure for sealing tubular filter elments
Inventors:
Gary C. Ganzi, Charles Thomas Paul
Patented Case
View Patent ↗
Granted: Apr 23, 1985
Filed: Feb 14, 1980
Inventors
Gary C. Ganzi
Charles Thomas Paul
Assignee (at issue)
Millipore 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.