Granted Patent
Utility
US 4,324,826 · App. 06/219,871
Finishing and sealing strips
Inventor:
Helmut Ginster
Patented Case
View Patent ↗
Granted: Apr 13, 1982
Filed: Dec 23, 1980
Inventor
Helmut Ginster
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.