Granted Patent
Utility
US 6,112,567 · App. 09/275,778
Method and apparatus for manufacturing a hollow body from a tubular blank by internal high-pressure shaping
Inventor:
Arndt Birkert
Patented Case
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Granted: Sep 5, 2000
Filed: Mar 25, 1999
Inventor
Arndt Birkert
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.