Granted Patent
Utility
US 6,745,609 · App. 10/288,948
Sheet metal forming die assembly with textured die surfaces
Inventors:
Mark Garnett, William A Marttila, Zhicong Yao
Patented Case
View Patent ↗
Granted: Jun 8, 2004
Filed: Nov 6, 2002
Inventors
Mark Garnett
William A Marttila
Zhicong Yao
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.