US PATENT SUBCLASS 196 / 112
Current as of: June, 1999
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(under subclass 104) Vaporizers mounted so as to permit their rotation.
SEE OR SEARCH CLASS
122, Liquid Heaters and Vaporizers,
11, and 12.
159, Concentrating Evaporators,
202, Distillation: Apparatus,
238, for separatory distillation apparatus in which the still is mounted upon an axis and rotated or tilted during distillation.