Granted Patent
Utility
US 5,655,480 · App. 08/678,240
Animal control litter
Inventor:
Ralph J. Steckel
Patented Case
View Patent ↗
Granted: Aug 12, 1997
Filed: Jul 11, 1996
Inventor
Ralph J. Steckel
Assignee (at issue)
Pet Ecology Brands, 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.