Granted Patent
Utility
US 5,469,991 · App. 08/389,967
Device for portioning a liquid substance
Inventor:
Eino Hamalainen
Patented Case
View Patent ↗
Granted: Nov 28, 1995
Filed: Feb 16, 1995
Inventor
Eino Hamalainen
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.