(under subclass 1) Subject matter wherein the frequency discriminator or sensing means is of the molecular or atomic resonance type, comprising a medium, which may be solid, liquid or gaseous, the frequency selective properties of which are due to the vibration or oscillation of the individual molecule or atom itself and are not due to the translational motion of the molecule or atom as a whole.
SEE OR SEARCH THIS CLASS, SUBCLASS:
9, for A.F.S. systems utilizing a distributed parameter type discriminator.
25+, for A.F.S. systems utilizing a signal or phase comparing type discriminator having at least two inputs for the signals (of the controlled oscillator and reference source) to be compared.
32+, for A.F.S. systems having a single input type discriminator.
78, for electrical noise or random wave generators wherein the translatory motions of charged or excited particles or molecules are utilized to generate oscillations. 94.1, for oscillators of the molecular or particle resonant type (e.g., maser) wherein a molecular or particle resonant solid, liquid or gas comprises the active element of the oscillator.
SEE OR SEARCH CLASS
250, Radiant Energy,
251, for devices for producing and propagating a unidirectional stream of neutral molecules or atoms through a vacuum, usually at thermal velocity and including means to excite the molecules or atoms at a resonant frequency.
