Granted Patent
Utility
US 5,394,747 · App. 08/050,226
Apparatus for continuous gravimetric metering of a pourable material
Inventor:
Hans W. Hafner
Patented Case
View Patent ↗
Granted: Mar 7, 1995
Filed: Jul 2, 1993
Inventor
Hans W. Hafner
Assignee (at issue)
Pfister 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.