(under the class definition) Devices and not classifiable below. Included are processes or methods relating to features of this class, cross-references being made to the particular feature.
SEE OR SEARCH CLASS
52, Static Structures (e.g., Buildings),
742.1+, for methods of filling hollow walls.
73, Measuring and Testing,
35.17, for a safety feature or a containment structure detail for use in testing an explosive.
