Granted Patent
Utility
US 5,453,837 · App. 08/289,420
Interferometric device for determining sizes and properties of cylindrical objects based on phase shift measurements
Inventors:
Amir A. Naqwi, Leslie M. Jenson
Patented Case
View Patent ↗
Granted: Sep 26, 1995
Filed: Aug 12, 1994
Inventors
Amir A. Naqwi
Leslie M. Jenson
Assignee (at issue)
TSI Group 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.