(under subclass 305) Float gauges claimed significantly in combination with other devices. Where more of an art device is claimed than is necessary to provide for the liquid level or depth measurement, the patents are placed with such art machine and cross-referenced here. Since most gauges are situated in a container, the inclusion of any type of container, or closure therefor, broadly is not sufficient to place the patent here, and classification is made in the following subclasses according to the float gauge structure.
SEE OR SEARCH THIS CLASS, SUBCLASS:
291+, 293, and 294, for combinations of float gauges with other measuring devices, with illuminating means, or with a funnel of hose nozzle.
