Granted Patent
Utility
US 6,366,758 · App. 09/421,730
Musical cube
Inventors:
Steven Bryan Dunn, Norman Weinberger
Patented Case
View Patent ↗
Granted: Apr 2, 2002
Filed: Oct 20, 1999
Inventors
Steven Bryan Dunn
Norman Weinberger
Assignee (at issue)
MUNCHKIN, 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.