Granted Patent
Utility
US 5,253,453 · App. 07/792,014
Sealing arrangements
Inventors:
Klaus-Peter Maass, Peter Frommen
Patented Case
View Patent ↗
Granted: Oct 19, 1993
Filed: Nov 13, 1991
Inventors
Klaus-Peter Maass
Peter Frommen
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.