Granted Patent
Utility
US 6,680,459 · App. 10/175,831
Laser beam machining apparatus and laser beam machining method
Inventors:
Shuso Kanaya, Yuichi Morita
Patented Case
View Patent ↗
Granted: Jan 20, 2004
Filed: Jun 21, 2002
Inventors
Shuso Kanaya
Yuichi Morita
Assignee (at issue)
Nippei Toyama 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.