Granted Patent
Utility
US 6,417,487 · App. 09/920,823
Laser beam machining head
Inventors:
Yasumi Nagura, Michisuke Nayama, Takashi Ishide, Yoshio Hashimoto, Yukio Michishita, Koji Okimura
Patented Case
View Patent ↗
Granted: Jul 9, 2002
Filed: Aug 3, 2001
Inventors
Yasumi Nagura
Michisuke Nayama
Takashi Ishide
Yoshio Hashimoto
Yukio Michishita
Koji Okimura
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.