Granted Patent
Utility
US 6,513,483 · App. 09/778,402
Pre-combustion chamber for an internal combustion engine
Inventor:
Thomas C. Riggs
Patented Case
View Patent ↗
Granted: Feb 4, 2003
Filed: Feb 7, 2001
Inventor
Thomas C. Riggs
Assignee (at issue)
Cooper Cameron Corporation
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.