Granted Patent
Utility
US 6,366,431 · App. 09/430,995
Head supporting arm having laser beam exposing aperture
Inventors:
Tatsumi Tsuchiya, Tatsushi Yoshida, Hiroyoshi Yokome, Naoki Fujii
Patented Case
View Patent ↗
Granted: Apr 2, 2002
Filed: Nov 1, 1999
Inventors
Tatsumi Tsuchiya
Tatsushi Yoshida
Hiroyoshi Yokome
Naoki Fujii
Assignee (at issue)
International Business Machines 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.