Granted Patent
Utility
US 5,507,490 · App. 08/518,543
Game apparatus
Inventor:
Takashi Hagiwara
Patented Case
View Patent ↗
Granted: Apr 16, 1996
Filed: Aug 23, 1995
Inventor
Takashi Hagiwara
Assignee (at issue)
SIGMA 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.