(under subclass 90.1) Devices relating to the cover of the button or in the mode of applying the same. Usually the idea is to permit the use of various covers as occasion arises.
SEE OR SEARCH CLASS
40, Card, Picture, or Sign Exhibiting,
315, for devices to be applied to buttons carrying indicia such as conductor, motorman, etc.
63, Jewelry,
26+, for devices for attaching stones or like ornaments, even though to a button, and the devices are not peculiar to buttons.