Granted Patent
Utility
US 5,742,012 · App. 08/707,131
Switching field
Inventors:
Jorg Franzke, Wolfgang Kraft
Patented Case
View Patent ↗
Granted: Apr 21, 1998
Filed: Sep 3, 1996
Inventors
Jorg Franzke
Wolfgang Kraft
Assignee (at issue)
Krone Corporation
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.