Granted Patent
Utility
US 6,648,595 · App. 10/054,456
Pump with selectable suction ports
Inventor:
Karsten Laing
Patented Case
View Patent ↗
Granted: Nov 18, 2003
Filed: Jan 24, 2002
Inventor
Karsten 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.