Granted Patent
Utility
US 6,796,772 · App. 10/187,802
Ejector and negative-pressure supply apparatus using the same
Inventors:
Junichi Ikeda, Atsuya Koshu, Jun Watanabe
Patented Case
View Patent ↗
Granted: Sep 28, 2004
Filed: Jul 3, 2002
Inventors
Junichi Ikeda
Atsuya Koshu
Jun Watanabe
Assignee (at issue)
Tokico, 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.