Granted Patent
Utility
US 5,647,590 · App. 08/342,565
Game ball for urban use
Inventors:
Alan Walker, Ron LaLiberty
Patented Case
View Patent ↗
Granted: Jul 15, 1997
Filed: Nov 21, 1994
Inventors
Alan Walker
Ron LaLiberty
Assignee (at issue)
Lisco 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.