.~.~ With temperature modifier and/or gas or vapor atmosphere control {3}
343
.~.~.~ With heating element
DEFINITION
Classification: 310/343
With heating element:
(under subclass 341) Subject matter having means to add heat to the piezoelectric element, which means is a heat producing element (e.g., resistive heater within the crystal housing or directly in contact with the crystal).
SEE OR SEARCH CLASS
174, Electricity: Conductors and Insulators,
15+, for enclosures for circuit elements which may include a heater.
219, Electric Heating,
210, for the combination of a piezoelectric element and a heating device.
236, Automatic Temperature and Humidity Regulation, 1, for temperature control devices which may include, or protect a piezoelectric element.
331, Oscillators,
69, and 70 for oscillators with outer casing or housing provided with means to modify the temperature therein, which oscillator may utilize a piezoelectric element.
