Granted Patent
Utility
US 5,392,828 · App. 08/080,235
Refillable liquid reservoir
Inventors:
Stephen James Watson, Sam R. Leighton, Peter W. Czwienczek
Patented Case
View Patent ↗
Granted: Feb 28, 1995
Filed: Jun 23, 1993
Inventors
Stephen James Watson
Sam R. Leighton
Peter W. Czwienczek
Assignee (at issue)
Orbital Engine Company Pty Limited
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.