Granted Patent
Utility
US 4,813,184 · App. 07/123,923
Sealing arrangements
Inventor:
Erich Weimar
Patented Case
View Patent ↗
Granted: Mar 21, 1989
Filed: Nov 23, 1987
Inventor
Erich Weimar
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.