Granted Patent
Utility
US 6,600,133 · App. 10/009,442
Welding system
Inventors:
Masao Watanabe, Hideshi Sakashita, Tadashi Nagashima, Takashi Ishide, Kenji Nishikawa
Patented Case
View Patent ↗
Granted: Jul 29, 2003
Filed: Dec 10, 2001
Inventors
Masao Watanabe
Hideshi Sakashita
Tadashi Nagashima
Takashi Ishide
Kenji Nishikawa
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.