Granted Patent
Utility
US 6,014,947 · App. 08/977,172
Ground grain animal litter
Inventors:
James H. Sladek, S. Michael Hughes, Roy F. House
Patented Case
View Patent ↗
Granted: Jan 18, 2000
Filed: Nov 24, 1997
Inventors
James H. Sladek
S. Michael Hughes
Roy F. House
Assignee (at issue)
Pet Care Systems, 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.