Granted Patent
Utility
US 6,539,753 · App. 09/701,546
Drum type washing machine
Inventors:
Masumi Ito, Fumitaka Yamazaki, Shinichiro Kawabata, Kiyomi Sasano, Shuji Hashiba
Patented Case
View Patent ↗
Granted: Apr 1, 2003
Filed: Nov 30, 2000
Inventors
Masumi Ito
Fumitaka Yamazaki
Shinichiro Kawabata
Kiyomi Sasano
Shuji Hashiba
Assignee (at issue)
Kabushiki Kaisha Toshiba
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.