Granted Patent
Utility
US 6,500,240 · App. 09/635,430
Dust collector
Inventors:
Kazutaka Tomimatsu, Yasutoshi Ueda
Patented Case
View Patent ↗
Granted: Dec 31, 2002
Filed: Aug 10, 2000
Inventors
Kazutaka Tomimatsu
Yasutoshi Ueda
Assignee (at issue)
MITSUBISHI ELECTRIC 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.