Granted Patent
Utility
US 4,953,785 · App. 07/237,843
Track assembly for toy vehicle
Inventor:
Tadeusz W. Keska
Patented Case
View Patent ↗
Granted: Sep 4, 1990
Filed: Aug 29, 1988
Inventor
Tadeusz W. Keska
Assignee (at issue)
Hasbro, 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.