Granted Patent
Utility
US 6,516,646 · App. 09/880,051
Device for manufacturing a hollow body from two plates
Inventors:
Wilhelm Arns, Arndt Birkert, Matthias Schroeder
Patented Case
View Patent ↗
Granted: Feb 11, 2003
Filed: Jun 14, 2001
Inventors
Wilhelm Arns
Arndt Birkert
Matthias Schroeder
Assignee (at issue)
Daimlerchrysler AG
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.