Granted Patent
Utility
US 5,127,731 · App. 07/652,753
Stabilized two-color laser diode interferometer
Inventor:
Peter J. DeGroot
Patented Case
View Patent ↗
Granted: Jul 7, 1992
Filed: Feb 8, 1991
Inventor
Peter J. DeGroot
Assignee (at issue)
Hughes Aircraft Company
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.