Cleaning and liquid contact with solids

SECTION I - CLASS DEFINITION

(1) This is the generic class for:

(A) Cleaning, i.e., the separation or removal of adherent dirt, scale, tarnish, impurities or any other foreign or undesired matter (as distinguished from solid-material working to obtain desired shapes or new surfaces or removal of a constituent part of the base material of a solid) from solid materials or objects whether or not the resultant separated ingredients are recovered in whole or in part for subsequent use. This includes the pickling of metal. By materials or objects are meant any solid material or object, whether a machine or any other solid in either a naturally occurring or manufactured state and includes the living body.

(B) The contacting of solids with liquids for any purpose not provided for in other classes.

(2) This class has processes and apparatus for the purposes of section (A) above, not elsewhere provided for, as pointed out in the appended notes, but not the resultant products. When the product is claimed, it is classified in the class appropriate thereto and cross-referenced here for the process or apparatus disclosed or claimed.