Granted Patent
Utility
US 5,469,148 · App. 07/761,886
Frequency monitoring device
Inventors:
Hans-Martin Baumann, Rolf Muller
Patented Case
View Patent ↗
Granted: Nov 21, 1995
Filed: Nov 1, 1991
Inventors
Hans-Martin Baumann
Rolf Muller
Assignee (at issue)
Papst Licensing 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.