Granted Patent
Utility
US 6,675,554 · App. 09/889,266
Method and device for closing packagings made of flexible material
Inventors:
Jürgen Hanten, Gunter Vermehren, Gerhard Demmig
Patented Case
View Patent ↗
Granted: Jan 13, 2004
Filed: Jan 2, 2002
Inventors
Jürgen Hanten
Gunter Vermehren
Gerhard Demmig
Assignee (at issue)
Poly-clip System 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.