Granted Patent
Utility
US 5,244,549 · App. 07/613,670
Process for the reduction of dyes
Inventor:
Thomas Bechtold
Patented Case
View Patent ↗
Granted: Sep 14, 1993
Filed: Jan 29, 1991
Inventor
Thomas Bechtold
Assignee (at issue)
Verein zur Forderung der Forschung und Entwicklung in der Textilwirtschaft
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.