Granted Patent
Utility
US 4,256,300 · App. 06/071,705
Foldable play gym
Inventor:
Raymond W. Boucher
Patented Case
View Patent ↗
Granted: Mar 17, 1981
Filed: Aug 31, 1979
Inventor
Raymond W. Boucher
Assignee (at issue)
Hedstrom 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.