Granted Patent
Utility
US 5,014,382 · App. 07/393,536
Swimming pool cleaner
Inventor:
Dieter H. F. Kallenbach
Patented Case
View Patent ↗
Granted: May 14, 1991
Filed: Aug 14, 1989
Inventor
Dieter H. F. Kallenbach
Assignee (at issue)
BPH Patent Holding AG
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.