Granted Patent
Utility
US 4,667,873 · App. 06/819,843
Top or bottom sealing structure for paper container
Inventors:
Nobushige Yasui, Muneki Fukumoto, Shinzo Saito
Patented Case
View Patent ↗
Granted: May 26, 1987
Filed: Jan 17, 1986
Inventors
Nobushige Yasui
Muneki Fukumoto
Shinzo Saito
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.