Granted Patent
Utility
US 5,993,166 · App. 08/919,669
Diffusion pumps having an integrated reservoir for the working fluid
Inventor:
Graeme Huntley
Patented Case
View Patent ↗
Granted: Nov 30, 1999
Filed: Aug 28, 1997
Inventor
Graeme Huntley
Assignee (at issue)
The BOC Group plc
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.