Granted Patent
Utility
US 5,375,776 · App. 08/138,922
Method and apparatus for the comminution of material for grinding
Inventors:
Detlev Kupper, Osbert R. Knobloch, Ludger Kimmeyer, Werner Brosowski
Patented Case
View Patent ↗
Granted: Dec 27, 1994
Filed: Oct 19, 1993
Inventors
Detlev Kupper
Osbert R. Knobloch
Ludger Kimmeyer
Werner Brosowski
Assignee (at issue)
Krupp Polysius AG
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.