(under the class definition) Subject matter for testing of sealed receptacles (usually cans). Test is usually for spoilage of contents, presence of foreign matter therein, etc.
SEE OR SEARCH THIS CLASS, SUBCLASS:
37+, particularly subclasses 45.4 and 49.3, for testing of sealed receptacles with extraneously applied fluid pressure.
824, for testing of sealed receptacles by rotating squeezing elements.
