(under subclass 357) Apparatus in which the floor of the building or a part thereof acts as a support, casing or protector, the relation being other than that involved in merely setting the device on the floor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
247.43, for floor installed liquid seal traps.
350, and 354, for fluid handling systems mounted on or associated with the floor of a vehicle.
SEE OR SEARCH CLASS
251, Valves and Valve Actuation, 295, for pedal type valve actuators passing through the floor of a building.
