US PATENT SUBCLASS 196 / 114
.~ Vacuum
Current as of: June, 1999
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DEFINITION
Classification: 196/114
(under subclass 104) Vaporizers adapted for the distillation of mineral-oils under reduced pressure.
SEE OR SEARCH CLASS
159, Concentrating Evaporators,
17.1,.
208, Mineral Oils: Processes and Products,
357, and 366 for processes of distilling mineral oil under reduced pressure.