Granted Patent
Utility
US 6,824,354 · App. 10/668,942
Pump with selectable suction ports
Inventor:
Karsten Laing
Patented Case
View Patent ↗
Granted: Nov 30, 2004
Filed: Sep 22, 2003
Inventor
Karsten Laing
Assignees (at issue)
Oliver Laing
Karsten Laing
Birger Laing
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.