Granted Patent
Utility
US 4,522,150 · App. 06/619,837
Cat litter disposal housing
Inventor:
Leonard B. Gershman
Patented Case
View Patent ↗
Granted: Jun 11, 1985
Filed: Jun 12, 1984
Inventor
Leonard B. Gershman
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.