Granted Patent
Utility
US 6,167,733 · App. 09/291,982
Drum type washing machine having a pump integrally formed with a filter
Inventor:
Sang Dae Lee
Patented Case
View Patent ↗
Granted: Jan 2, 2001
Filed: Apr 15, 1999
Inventor
Sang Dae Lee
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.