Granted Patent
Utility
US 4,805,124 · App. 07/060,147
System and method for measuring elliptical elements
Inventor:
Frank S. Krufka
Patented Case
View Patent ↗
Granted: Feb 14, 1989
Filed: Jun 10, 1987
Inventor
Frank S. Krufka
Assignee (at issue)
RCA Licensing 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.