Granted Patent
Utility
US 4,938,178 · App. 07/378,513
Two stroke cycle internal combustion engines
Inventors:
Christopher K. Schlunke, Mark Lear
Patented Case
View Patent ↗
Granted: Jul 3, 1990
Filed: Jun 26, 1989
Inventors
Christopher K. Schlunke
Mark Lear
Assignee (at issue)
Orbital Engine Company Proprietary Limited
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.