US PATENT SUBCLASS 331 / 69
.~ With temperature modifier


Current as of: June, 1999
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331 /   HD   OSCILLATORS

68  DF  WITH OUTER CASING OR HOUSING {1}
69.~ With temperature modifier


DEFINITION

Classification: 331/69

(under subclass 68) Subject matter wherein means are associated with the housed oscillator for controlling or modifying the temperature of the oscillator or elements thereof.

SEE OR SEARCH THIS CLASS, SUBCLASS:

66, for oscillators combined with temperature sensing means external to the oscillator for controlling a characteristic of the oscillator (e.g., frequency or amplitude) as a function of an externally sensed temperature.

70, for oscillators having means for controlling or modifying the temperature of the oscillator or elements thereof and wherein the oscillator is not combined with an enclosing housing or casing.

SEE OR SEARCH CLASS

174, Electricity: Conductors and Insulators,

15.1+, for combined electrical device (recited by name only) casing or housing therefor and means for feeding, circulating or distributing a fluid or with means to cool either the electrical device or the fluid.