Granted Patent
Utility
US 5,164,015 · App. 07/669,032
Method for cleaning a vessel
Inventors:
Klaus Kuhnke, Alexander Langner, Klaus Pflugbeil, Kurt Schindler, Dorothea Moldenhauer, Siegfried Kohler
Patented Case
View Patent ↗
Granted: Nov 17, 1992
Filed: Mar 14, 1991
Inventors
Klaus Kuhnke
Alexander Langner
Klaus Pflugbeil
Kurt Schindler
Dorothea Moldenhauer
Siegfried Kohler
Assignee (at issue)
Siemens Aktiengesellschaft
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.