Granted Patent
Utility
US 6,033,283 · App. 08/211,781
Humdinger, string spinning toy
Inventor:
John Chen
Patented Case
View Patent ↗
Granted: Mar 7, 2000
Filed: May 14, 1996
Inventor
John Chen
Assignee (at issue)
Applied Elastomerics, 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.