Granted Patent
Utility
US 4,443,762 · App. 06/273,138
Method and apparatus for detecting the direction and distance to a target well casing
Inventor:
Arthur F. Kuckes
Patented Case
View Patent ↗
Granted: Apr 17, 1984
Filed: Jun 12, 1981
Inventor
Arthur F. Kuckes
Assignee (at issue)
Cornell Research Foundation, Inc.
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.