Granted Patent
Utility
US 6,042,084 · App. 09/251,258
Valve assembly having a valve spring retainer
Inventors:
Valentin Botosan, John A. Frait, Michael A. Bartolino, Berthold Martin
Patented Case
View Patent ↗
Granted: Mar 28, 2000
Filed: Feb 16, 1999
Inventors
Valentin Botosan
John A. Frait
Michael A. Bartolino
Berthold Martin
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.