Granted Patent
Utility
US 5,308,483 · App. 07/936,594
Microporous filtration funnel assembly
Inventors:
Eric Sklar, Tod Borton
Patented Case
View Patent ↗
Granted: May 3, 1994
Filed: Aug 27, 1992
Inventors
Eric Sklar
Tod Borton
Assignee (at issue)
Gelman Sciences
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.