Granted Patent
Utility
US 4,370,833 · App. 06/219,580
Sealing arrangements in the form of strips
Inventor:
Gerd Niemanns
Patented Case
View Patent ↗
Granted: Feb 1, 1983
Filed: Dec 23, 1980
Inventor
Gerd Niemanns
Assignee (at issue)
Draftex Development A.G.
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.