Granted Patent
Utility
US 4,979,629 · App. 07/464,008
Air expeller and supply receptacle for nursing bottle
Inventor:
Bonnie L. Askerneese
Patented Case
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Granted: Dec 25, 1990
Filed: Jan 12, 1990
Inventor
Bonnie L. Askerneese
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.