Granted Patent
Utility
US 6,635,106 · App. 09/926,427
Dust collecting apparatus and air-conditioning apparatus
Inventors:
Ryou Katou, Yoshikazu Tashiro
Patented Case
View Patent ↗
Granted: Oct 21, 2003
Filed: Oct 31, 2001
Inventors
Ryou Katou
Yoshikazu Tashiro
Assignee (at issue)
Matsushita Seiko Co., Ltd.
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.