Granted Patent
Utility
US 6,447,575 · App. 09/738,543
Method and apparatus for gas chromatography analysis of samples
Inventors:
Ralf Bremer, Andreas Hoffmann
Patented Case
View Patent ↗
Granted: Sep 10, 2002
Filed: Dec 15, 2000
Inventors
Ralf Bremer
Andreas Hoffmann
Assignee (at issue)
Gertstel Systemtechnik GmbH & Co.
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.