IP Library Granted Patent US 4,805,768
Granted Patent Utility
US 4,805,768 · App. 07/096,786

Paper container for liquid sealed with gas in head space, method of filling gas and apparatus for filling gas

Inventors: Youichi Nishiguchi, Kazuo Sasaki
Patented Case View Patent ↗
Granted: Feb 21, 1989 Filed: Sep 17, 1987
Inventors
Youichi Nishiguchi
Kazuo Sasaki

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.

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Quick Facts
Patent No.
US 4,805,768
App. No.
07/096,786
Filed
1987-09-17
Granted
1989-02-21
Kind
A