Granted Patent
Utility
US 5,624,585 · App. 08/139,793
Method and apparatus for welding material by laser beam
Inventors:
Koichi Haruta, Yuichiro Terashi
Patented Case
View Patent ↗
Granted: Apr 29, 1997
Filed: Oct 22, 1993
Inventors
Koichi Haruta
Yuichiro Terashi
Assignee (at issue)
Mitsui Petrochemical Industries, Ltd.
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.