Inventor
VIFIAN HUGO
US7 patents
Patents
7 patentsUS5062703ANov 5, 1991
Method and apparatus for measuring the length of, or distances to discontinuities in, an optical transmission medium
HEWLETT PACKARD CO79 citations94
US4921347AMay 1, 1990
Method and apparatus for calibrating a lightwave component measurement system
HEWLETT PACKARD CO38 citations91
US5041997AAug 20, 1991
Lightwave component analyzer
HEWLETT PACKARD CO25 citations90
US4024460AMay 17, 1977
Electronic line stretcher
HEWLETT PACKARD CO35 citations90
US3986113AOct 12, 1976
Two channel test instrument with active electronicphase shift means
HEWLETT PACKARD CO34 citations90
US4875859AOct 24, 1989
Method and apparatus for guiding a user during setup of a signal measurement system
HEWLETT PACKARD CO9 citations72
US4092724AMay 30, 1978
Polar converter
HEWLETT PACKARD CO0 citations39