.~ Delay lines including elastic bulk wave propagation means {7}
144
.~.~ Variable delay
DEFINITION
Classification: 333/144
Variable delay:
(under subclass 141) Subject matter wherein the effective length of the structure for transmitting mechanical waves may be varied to provide a variable delay.
(1) Note. Included in this subclass are devices wherein the propagation velocity within the structure for transmitting is a function of externally applied magnetic or electric fields, control voltages, radiation, or mechanical forces.
