Granted Patent
Utility
US 6,367,724 · App. 09/591,333
Bi-directionally compressible dye tube
Inventors:
Leon Eric Atkinson, Franz Josef Hallmann
Patented Case
View Patent ↗
Granted: Apr 9, 2002
Filed: Jun 9, 2000
Inventors
Leon Eric Atkinson
Franz Josef Hallmann
Assignee (at issue)
Technimark LLC
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.