Granted Patent
Utility
US 4,501,568 · App. 06/528,800
Shuttle wheel toy
Inventor:
Muneo Nagaoka
Patented Case
View Patent ↗
Granted: Feb 26, 1985
Filed: Sep 2, 1983
Inventor
Muneo Nagaoka
Assignee (at issue)
I & K Trading
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.