Granted Patent
Utility
US 6,608,281 · App. 09/925,464
Laser beam machining head and laser beam machining apparatus having same
Inventors:
Takashi Ishide, Yoshio Hashimoto, Masao Watanabe, Takashi Akaba, Daijiro Fujie
Patented Case
View Patent ↗
Granted: Aug 19, 2003
Filed: Aug 10, 2001
Inventors
Takashi Ishide
Yoshio Hashimoto
Masao Watanabe
Takashi Akaba
Daijiro Fujie
Assignee (at issue)
MITSUBISHI ELECTRIC 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.