(under subclass 700) Subject matter wherein the antenna includes means which prevents or reduces ice, snow or sleet accumulation, such as heating apparatus or material having a low freezing point.
SEE OR SEARCH THIS CLASS, SUBCLASS:
904, for antennas combined with structure for perfecting the antenna not otherwise classified.
SEE OR SEARCH CLASS
62, Refrigeration,
80, 140, 151, 234, and 272+ for refrigeration processes and apparatus involving defrosting, and subclasses 73 and 349+ for congealed product making with thawing. 138, Pipes and Tubular Conduits,
32+, for pipes and tubular conduits with thawing and freeze prevention.
165, Heat Exchange,
47+, for a structurally installed heat exchanger.
191, Electricity: Transmission to Vehicles,
62, for structure transmitting electricity to vehicles with ice preventers or clearers.
219, Electric Heating, appropriate subclasses for electric heating means.
244, Aeronautics,
134, for aircraft structure with ice prevention.
252, Compositions,
70, for compositions including those for frost prevention and ice thawing.
336, Inductor Devices, 55+, for inductor devices with temperature modifying means.
340, Communications: Electrical,
387.1+, for audible electrical weatherproofing signaling means which may be combined with devicers.
