Granted Patent
Utility
US 6,757,629 · App. 09/906,676
Calibration plate having accurately defined calibration pattern
Inventors:
Atsushi Takizawa, Kotaro Shirabe
Patented Case
View Patent ↗
Granted: Jun 29, 2004
Filed: Jul 18, 2001
Inventors
Atsushi Takizawa
Kotaro Shirabe
Assignee (at issue)
Fujitsu Limited
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.