Granted Patent
Utility
US 4,636,719 · App. 06/667,355
Apparatus for extended precision phase measurement
Inventors:
David Michael Zuk, Vernon L. Larrowe
Patented Case
View Patent ↗
Granted: Jan 13, 1987
Filed: Nov 1, 1984
Inventors
David Michael Zuk
Vernon L. Larrowe
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.