Granted Patent
Utility
US 6,401,979 · App. 09/509,896
Double pressurized container for charging undercup and double pressurized products using the container
Inventors:
Satoshi Mekata, Masazumi Tanaka
Patented Case
View Patent ↗
Granted: Jun 11, 2002
Filed: Apr 3, 2000
Inventors
Satoshi Mekata
Masazumi Tanaka
Assignee (at issue)
Osaka Shipbuilding Co., Ltd.
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.