Granted Patent
Utility
US 6,698,828 · App. 10/098,664
Folding chair
Inventor:
Alexander Chan
Patented Case
View Patent ↗
Granted: Mar 2, 2004
Filed: Mar 15, 2002
Inventor
Alexander Chan
Assignee (at issue)
Portfolio Productions, 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.