Granted Patent
Utility
US 4,563,569 · App. 06/498,853
Gas shielded arc welding torch with consumable electrode wire
Inventors:
Kousuke Shiramizu, Yoshirou Awano, Hiroji Okada, Hiromu Yamagami, Hiroshi Takai
Patented Case
View Patent ↗
Granted: Jan 7, 1986
Filed: May 27, 1983
Inventors
Kousuke Shiramizu
Yoshirou Awano
Hiroji Okada
Hiromu Yamagami
Hiroshi Takai
Assignees (at issue)
Osaka Transformer Co., Ltd.
TOYOTA JIDOSHA KABUSHIKI KAISHA
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.