Granted Patent
Utility
US 6,664,507 · App. 09/926,680
Laser machining apparatus
Inventors:
Takashi Akaba, Tadashi Nagashima, Takashi Ishide, Syuhou Tsubota
Patented Case
View Patent ↗
Granted: Dec 16, 2003
Filed: Nov 30, 2001
Inventors
Takashi Akaba
Tadashi Nagashima
Takashi Ishide
Syuhou Tsubota
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.