Granted Patent
Utility
US 5,293,664 · App. 07/815,764
Low noise and less vibration vacuum cleaner
Inventors:
Moo-Saeng Lim, Chang Woo Son, Sang Kang
Patented Case
View Patent ↗
Granted: Mar 15, 1994
Filed: Jan 2, 1992
Inventors
Moo-Saeng Lim
Chang Woo Son
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.