Granted Patent
Utility
US 5,394,852 · App. 07/755,323
Method and apparatus for improved combustion engine
Inventor:
Roy Edward McAlister
Patented Case
View Patent ↗
Granted: Mar 7, 1995
Filed: Sep 5, 1991
Inventor
Roy Edward McAlister
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.