Granted Patent
Utility
US 6,155,657 · App. 09/137,638
Drive track for self-propelled pool cleaner
Inventors:
Giora Erlich, Tibor Horvath
Patented Case
View Patent ↗
Granted: Dec 5, 2000
Filed: Aug 21, 1998
Inventors
Giora Erlich
Tibor Horvath
Assignee (at issue)
AQUA PRODUCTS, INC.
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.