Granted Patent
Utility
US 5,975,372 · App. 09/051,039
Metering dispenser for liquids
Inventor:
Klaus Heyn
Patented Case
View Patent ↗
Granted: Nov 2, 1999
Filed: Jun 1, 1998
Inventor
Klaus Heyn
Assignee (at issue)
Zeller Plastik GmbH
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.