Granted Patent
Utility
US 4,934,815 · App. 07/217,775
Aperture sampling coherence sensor and method
Inventors:
Anthony M. Tai, John N. Cederquist
Patented Case
View Patent ↗
Granted: Jun 19, 1990
Filed: Jul 5, 1988
Inventors
Anthony M. Tai
John N. Cederquist
Assignee (at issue)
Environmental Research Institute
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.