Granted Patent
Utility
US 6,372,133 · App. 09/675,575
Multiple filter housing with filter element locking device
Inventors:
Jochen Von Der Hardt, Ulrich Quaschning, Maik Jornitz
Patented Case
View Patent ↗
Granted: Apr 16, 2002
Filed: Sep 29, 2000
Inventors
Jochen Von Der Hardt
Ulrich Quaschning
Maik Jornitz
Assignee (at issue)
Sartorius AG
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.