Granted Patent
Utility
US 5,836,047 · App. 08/795,186
Vacuum cleaner for both upright and canister modes
Inventors:
Jin Bang Lee, Byung-Cheol Choi, Seon Kyu Kim, Yeong-je Jeon, Seon Young Hong, Nam-Ho Lee
Patented Case
View Patent ↗
Granted: Nov 17, 1998
Filed: Feb 4, 1997
Inventors
Jin Bang Lee
Byung-Cheol Choi
Seon Kyu Kim
Yeong-je Jeon
Seon Young Hong
Nam-Ho 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.