Granted Patent
Utility
US 5,132,264 · App. 07/723,871
Concentrated water soluble organic lanthanide salts
Inventors:
Heiko Mauermann, Nicholas A. Sullo
Patented Case
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Granted: Jul 21, 1992
Filed: Jul 1, 1991
Inventors
Heiko Mauermann
Nicholas A. Sullo
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.