Granted Patent
Utility
US 6,368,018 · App. 09/726,069
Installation for storing of natural gas
Inventor:
Jan Johansson
Patented Case
View Patent ↗
Granted: Apr 9, 2002
Filed: Nov 29, 2000
Inventor
Jan Johansson
Assignee (at issue)
Sydkraft AB
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.