Granted Patent
Utility
US 6,746,300 · App. 10/428,715
Toy top
Inventor:
Hiroyuki Matsukawa
Patented Case
View Patent ↗
Granted: Jun 8, 2004
Filed: May 3, 2003
Inventor
Hiroyuki Matsukawa
Assignee (at issue)
Takara Co., Ltd.
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.