(under subclass 45) Subject matter wherein the nonthermal quantity is either the degree of polymerization of a polymerizable substance, or the depth to which a hardening of an outer layer of metal extends.
(1) Note. The hardening of a layer of metal is often produced by quenching.
SEE OR SEARCH THIS CLASS, SUBCLASS:
47+, for determination of cure by cyclic loading.
SEE OR SEARCH CLASS
73, Measuring and Testing,
78+, for hardness testing, in general; and subclasses 808+ for testing by cyclic loading, in general.
