Granted Patent
Utility
US 6,743,082 · App. 09/819,765
Blasting apparatus
Inventors:
Yoshimi Tochishita, Kazuaki Okuno, Nobuhiro Misumi, Takeshi Nishiuchi
Patented Case
View Patent ↗
Granted: Jun 1, 2004
Filed: Mar 29, 2001
Inventors
Yoshimi Tochishita
Kazuaki Okuno
Nobuhiro Misumi
Takeshi Nishiuchi
Assignee (at issue)
Sumitomo Special Metals 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.