Granted Patent
Utility
US 4,869,047 · App. 07/085,149
Method of filling gas and apparatus for filling gas
Inventors:
Youichi Nishiguchi, Kazuo Sasaki
Patented Case
View Patent ↗
Granted: Sep 26, 1989
Filed: Aug 14, 1987
Inventors
Youichi Nishiguchi
Kazuo Sasaki
Assignee (at issue)
Jujo Paper 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.