Granted Patent
Utility
US 6,763,758 · App. 10/246,135
Multi-part cooled piston for an internal combustion engine
Inventors:
Peter Kemnitz, Dieter Messmer
Patented Case
View Patent ↗
Granted: Jul 20, 2004
Filed: Sep 18, 2002
Inventors
Peter Kemnitz
Dieter Messmer
Assignee (at issue)
Mahle GmbH
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.