Granted Patent
Utility
US 6,557,504 · App. 10/194,697
Two-stroke internal combustion engine
Inventors:
Hans Strom, Bo Carlsson
Patented Case
View Patent ↗
Granted: May 6, 2003
Filed: Jul 12, 2002
Inventors
Hans Strom
Bo Carlsson
Assignee (at issue)
Aktiebolaget Electrolux
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.