Granted Patent
Utility
US 6,026,691 · App. 08/501,879
Methods and devices for electrochemically determining metal fatigue status
Inventors:
Campbell Laird, Yuanfeng Li
Patented Case
View Patent ↗
Granted: Feb 22, 2000
Filed: Jun 30, 1995
Inventors
Campbell Laird
Yuanfeng Li
Assignee (at issue)
The Trustees of the University of Pennsylvania
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.