Granted Patent
Utility
US 6,199,519 · App. 09/104,895
Free-piston engine
Inventor:
Peter Van Blarigan
Patented Case
View Patent ↗
Granted: Mar 13, 2001
Filed: Jun 25, 1998
Inventor
Peter Van Blarigan
Assignee (at issue)
Sandia 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.