Granted Patent
Utility
US 5,871,237 · App. 08/820,894
Enhanced children's book having rotatable mechanical features
Inventor:
Waldo Henley Hunt
Patented Case
View Patent ↗
Granted: Feb 16, 1999
Filed: Mar 19, 1997
Inventor
Waldo Henley Hunt
Assignee (at issue)
Intervisual Books, 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.