US PATENT SUBCLASS 196 / 128
.~ Films or sprays
Current as of: June, 1999
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(under subclass 104) Mineral-oil vaporizers having means for causing the oil being distilled to assume the form of a film or spray.
SEE OR SEARCH CLASS
122, Liquid Heaters and Vaporizers
39, and subclass 501.
159, Concentrating Evaporators,
3, and 5.
239, Fluid Sprikling, Spraying, and Diffusing, appropriate subclasses for nozzle devices, per se, especially 193, for weir type discharge means discharging a film or curtain or fluid.