Granted Patent
Utility
US 5,797,661 · App. 08/430,606
Wheel of a vacuum cleaner
Inventors:
Jin Bang Lee, Seon Kyu Kim, Suk-Gu Kim
Patented Case
View Patent ↗
Granted: Aug 25, 1998
Filed: Apr 28, 1995
Inventors
Jin Bang Lee
Seon Kyu Kim
Suk-Gu 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.