Granted Patent
Utility
US 5,928,396 · App. 09/001,074
Pocket filter and method and apparatus for making the same
Inventor:
Kyung-Ju Choi
Patented Case
View Patent ↗
Granted: Jul 27, 1999
Filed: Dec 31, 1997
Inventor
Kyung-Ju Choi
Assignee (at issue)
AAF International, Inc.
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.