Granted Patent
Utility
US 6,566,892 · App. 09/862,081
Portable fuel analyzer for analyzing the alcohol content of a mixed fuel
Inventors:
Rick Schaefer, Isabelle Desmier
Patented Case
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Granted: May 20, 2003
Filed: May 21, 2001
Inventors
Rick Schaefer
Isabelle Desmier
Assignee (at issue)
Siemens VDO Automotive 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.