Granted Patent
Utility
US 6,752,452 · App. 09/969,979
Two-position collapsible reclining chair
Inventors:
Sang B. Choi, Ho Sik Byun
Patented Case
View Patent ↗
Granted: Jun 22, 2004
Filed: Sep 29, 2001
Inventors
Sang B. Choi
Ho Sik Byun
Assignee (at issue)
North Pole Limited
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.