Patent US 5155439A

Patent number	US 5155439A (click link for details and documents via Google Patents)
Title	Method of detecting and characterizing anomalies in a propagative medium
Inventors	Dennis L. Holmbo, Wendelyn Gavett, Barry L. Rosenow, Michael S. Overton
Assignee	Tektronix Inc
Filing date	1989-12-12
Grant date	1992-10-13