Granted Patent
Utility
US 4,730,213 · App. 06/856,008
Method measuring transparent elements and an opaque medium
Inventors:
Daniel Kelly, Evo Andreatti, Jr., Frank S. Krufka
Patented Case
View Patent ↗
Granted: Mar 8, 1988
Filed: Apr 25, 1986
Inventors
Daniel Kelly
Evo Andreatti, Jr.
Frank S. Krufka
Assignee (at issue)
RCA Corporation
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.