Granted Patent
Utility
US 5,110,056 · App. 07/652,604
Method and apparatus for reducing brittle material for subsequent grinding
Inventors:
Gotthardt Blasczyk, Norbert Patzelt
Patented Case
View Patent ↗
Granted: May 5, 1992
Filed: Feb 8, 1991
Inventors
Gotthardt Blasczyk
Norbert Patzelt
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.