Granted Patent
Utility
US 4,879,989 · App. 07/102,110
Toy stacking and kicking mechanism
Inventors:
David Roy, Marjorie E. C. Roy
Patented Case
View Patent ↗
Granted: Nov 14, 1989
Filed: Sep 29, 1987
Inventors
David Roy
Marjorie E. C. Roy
Assignee (at issue)
The Quaker Oats Company
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.