Granted Patent
Utility
US 6,283,871 · App. 09/133,505
Participatory play structure having discrete play articles
Inventor:
Rick A. Briggs
Patented Case
View Patent ↗
Granted: Sep 4, 2001
Filed: Aug 12, 1998
Inventor
Rick A. Briggs
Assignee (at issue)
Koala Corporation
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.