Granted Patent
Utility
US 5,471,707 · App. 08/249,217
Assembly for a vacuum cleaner having a sound-absorbing system
Inventor:
Sang Kang
Patented Case
View Patent ↗
Granted: Dec 5, 1995
Filed: May 26, 1994
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.