Granted Patent
Utility
US 6,505,591 · App. 09/916,127
Valve train with assembly guides
Inventors:
Alan W. Hayman, Terry Wayne Black
Patented Case
View Patent ↗
Granted: Jan 14, 2003
Filed: Jul 27, 2001
Inventors
Alan W. Hayman
Terry Wayne Black
Assignee (at issue)
General Motors LLC
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.