Granted Patent
Utility
US 6,244,474 · App. 09/610,242
Interchangeable liquid dispensing cartridge pump
Inventor:
Herbert H. Loeffler
Patented Case
View Patent ↗
Granted: Jun 12, 2001
Filed: Jul 6, 2000
Inventor
Herbert H. Loeffler
Assignee (at issue)
Cytologix Corporation
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.