Granted Patent
Utility
US 4,989,369 · App. 07/412,897
Sealing and retaining strips
Inventor:
Klaus-Peter Maass
Patented Case
View Patent ↗
Granted: Feb 5, 1991
Filed: Sep 26, 1989
Inventor
Klaus-Peter Maass
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.