Granted Patent
Utility
US 4,923,644 · App. 06/660,570
Apparatus for impregnating water with carbon dioxide
Inventor:
Alexander Kuckens
Patented Case
View Patent ↗
Granted: May 8, 1990
Filed: Oct 16, 1984
Inventor
Alexander Kuckens
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.