Granted Patent
Utility
US 5,832,559 · App. 08/763,448
Multipurpose auxiliary brush for a vacuum cleaner
Inventor:
Sang Kang
Patented Case
View Patent ↗
Granted: Nov 10, 1998
Filed: Dec 11, 1996
Inventor
Sang Kang
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.