US PATENT SUBCLASS 196 / 127
.~ Fluid injectors
Current as of: June, 1999
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(under subclass 104) Mineral-oil vaporizers provided with means for injecting gas, vapor, or liquid into the oil being distilled.
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126, for fluid injectors which cause a definite circculation or agitation of the oil.
SEE OR SEARCH CLASS
122, Liquid Heaters and Vaporizers,
159, Concentrating Evaporators, 16.1,.
208, Mineral Oils: Processes and Products,
125, 128, 356 and 362 for processes for mineral oil treatment involving injecting a gas, vapor or liquid.
261, Gas and Liquid Contact Apparatus, appropriate subclass.