Granted Patent
Utility
US 5,409,667 · App. 08/236,658
Tube rack
Inventor:
Edward E. Elson
Patented Case
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Granted: Apr 25, 1995
Filed: Apr 29, 1994
Inventor
Edward E. Elson
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.