Granted Patent
Utility
US 6,182,255 · App. 09/157,016
IC tester
Inventor:
Hiroshi Ohtomo
Patented Case
View Patent ↗
Granted: Jan 30, 2001
Filed: Sep 18, 1998
Inventor
Hiroshi Ohtomo
Assignee (at issue)
Ando Electric Co., 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.