Granted Patent
Utility
US 4,955,840 · App. 07/394,014
Toy sound-emitting and bubble-blowing saxophone
Inventor:
David E. Moomaw
Patented Case
View Patent ↗
Granted: Sep 11, 1990
Filed: Aug 15, 1989
Inventor
David E. Moomaw
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.