Patent US 4708661A

Patent number	US 4708661A (click link for details and documents via Google Patents)
Title	Modified BNC connector for active probe
Inventors	Mark R. Morland, Paul A. Cole, Ivan J. Cousins, Raymond A. Zandonatti
Company	Tektronix Inc
Filing date	1986-07-28
Grant date	1987-11-24

See Tekprobe BNC connector.