Granted Patent
Utility
US 6,441,907 · App. 09/564,533
High accuracy ring laser interferometer using an external cavity ring laser
Inventors:
Jung Young Son, Ivan A. Stlilets, Yong Jin Choi, Ji Eun Ban
Patented Case
View Patent ↗
Granted: Aug 27, 2002
Filed: May 4, 2000
Inventors
Jung Young Son
Ivan A. Stlilets
Yong Jin Choi
Ji Eun Ban
Assignee (at issue)
Korea Institute of Science and Technology
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.