(under subclass 700) Apparatus intended to juxtapose, associate, or fasten the face covering transparent window of a time piece to the time piece case, or intended to separate or unfasten the face covering transparent window of a time piece from the time piece case.
(1) Note. The patents in this subclass, for the most part, distort the crystal to decrease the perimeter and enable the crystal to be inserted into its bezel.
SEE OR SEARCH CLASS
81, Tools,
3.5+, for a tool for operating on and assembling a spectacle frame and a lens and subclasses 6+ for a watchmaker's tool.