(under the class definition) Miscellaneous processes not provided for in preceding subclasses.
(1) Note. In this subclass are collected as originals or as cross references, disclosures of the particular contaminants removed from the work, and/or the particular chemicals or fluids, used, except for the characters of subject matter provided for in the below noted subclasses.
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20, for carbon removal where the process includes heating or contact with combustion products.
38, for removal of paints, varnishes, lacquers, or enamels.
39, for miscellaneous carbon removal.
40, for oil, grease, tar, or wax removal by dissolving. 41, for acid treating metal base work.
