Granted Patent
Utility
US 6,474,576 · App. 09/522,472
Milling apparatus and milling method
Inventors:
Akiyasu Oota, Akihito Tsujimoto, Katsumi Okayama
Patented Case
View Patent ↗
Granted: Nov 5, 2002
Filed: Mar 9, 2000
Inventors
Akiyasu Oota
Akihito Tsujimoto
Katsumi Okayama
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.