(under the class definition) Devices comprising plates, bars, or bolts for engaging the closures and their casings or for engaging a plurality of closure elements and having devices for securing the plates and closures in adjusted position.
SEE OR SEARCH CLASS
220, Receptacles,
315, for closure clamps having structures which retain the clamps in closure-fastening position until the cover is in a certain position, e.g., in a partially opened, venting position, and subclass 316 for clamps which are held in closure fastening position by means operated by the internal pressure of the receptacle.
