Granted Patent
Utility
US 5,948,246 · App. 08/104,339
Vacuum filtration device
Inventor:
Peter Zuk, Jr.
Patented Case
View Patent ↗
Granted: Sep 7, 1999
Filed: Aug 9, 1993
Inventor
Peter Zuk, Jr.
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.