Granted Patent
Utility
US 5,881,580 · App. 08/978,425
Auxiliary washing device in a washing machine
Inventor:
Jun-Ho Ra
Patented Case
View Patent ↗
Granted: Mar 16, 1999
Filed: Nov 25, 1997
Inventor
Jun-Ho Ra
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.