Patent US 4870348A

Patent number	US 4870348A (click link for details and documents via Google Patents)
Title	Markers for readout and delta-parameter measurements on a quasi-3-dimensional display of a spectrum
Inventors	Michael D. Smith, Stuart H. Rowan, Robert S. Vistica, Steven R. Morton
Company	Tektronix Inc
Filing date	1988-06-09
Grant date	1989-09-26