Granted Patent
Utility
US 6,540,213 · App. 09/841,785
Column comprising a base between filler body sections
Inventors:
Christian Bachmann, Emil Fehr, Adrian Faust
Patented Case
View Patent ↗
Granted: Apr 1, 2003
Filed: Apr 24, 2001
Inventors
Christian Bachmann
Emil Fehr
Adrian Faust
Assignee (at issue)
Sulzer Chemtech 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.