(under subclass 169) Device wherein the auxiliary closure is movable to cover or uncover a viewing or ventilating opening or a slotted opening for the passage of mail, e.g., "door peeps", "peep holes", "interviewers" or "observation doors".
SEE OR SEARCH CLASS
109, Safes, Bank Protection, or a Related Device,
21.5, for a bank protection device comprising a protected voice transmitting path, and subclass 58.5 for port type bank protection means.
232, Deposit and Collection Receptacles,
19+, for a mail box and subclasses 45+ for a chute, having means for mounting the box or chute on a surface; e.g., a closure or its mounting frame. Closure structure in addition to that necessary to mount the box or chute is beyond the scope of Class 232 and will be found in this class (49) and subclass (171). 454, Ventilation,
211, for a ventilating closure mounted on a sash frame combined with subject matter not included in Class 49 (e.g., a screen) and subclass 212 for a ventilating closure substituted for a pane in a sash.
