Granted Patent
Utility
US 6,427,484 · App. 09/972,808
Air conditioner having oxygen enriching device
Inventors:
Young Hoon Choi, Kwan Choull Park, Sang Min Kim
Patented Case
View Patent ↗
Granted: Aug 6, 2002
Filed: Oct 4, 2001
Inventors
Young Hoon Choi
Kwan Choull Park
Sang Min Kim
Assignee (at issue)
Daewoo Electronics Corporation
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.