Granted Patent
Utility
US 5,839,232 · App. 08/819,446
Sealing or guiding assemblies
Inventors:
Heinz-Peter Backes, Heinz Andrzejewski
Patented Case
View Patent ↗
Granted: Nov 24, 1998
Filed: Mar 17, 1997
Inventors
Heinz-Peter Backes
Heinz Andrzejewski
Assignee (at issue)
Draftex Industries Limited
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.