Granted Patent
Utility
US 6,044,816 · App. 09/173,390
Variable valve control for an internal combustion engine
Inventors:
Walter Buck, Roland Schwegler
Patented Case
View Patent ↗
Granted: Apr 4, 2000
Filed: Oct 15, 1998
Inventors
Walter Buck
Roland Schwegler
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.