Granted Patent
Utility
US 6,331,781 · App. 09/428,684
Spaced adaptor plate for semiconductor tester
Inventors:
Jeffrey S. McMullin, James Hannan
Patented Case
View Patent ↗
Granted: Dec 18, 2001
Filed: Oct 27, 1999
Inventors
Jeffrey S. McMullin
James Hannan
Assignee (at issue)
Credence Systems 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.