Granted Patent
Utility
US 6,647,713 · App. 10/089,748
Stratified scavenging two-cycle engine with catalyst
Inventors:
Yasutsune Miyajiri, Toshiharu Sawada
Patented Case
View Patent ↗
Granted: Nov 18, 2003
Filed: Jul 15, 2002
Inventors
Yasutsune Miyajiri
Toshiharu Sawada
Assignee (at issue)
Komatsu Zenoah Co.
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.