Granted Patent
Utility
US 6,074,753 · App. 09/009,183
Drawn polyester yarn for reinforcement of elastic structures
Inventor:
Kurt-Guenter Berndt
Patented Case
View Patent ↗
Granted: Jun 13, 2000
Filed: Jan 20, 1998
Inventor
Kurt-Guenter Berndt
Assignee (at issue)
Hoechst Trevira GmbH & Co. KG
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.