US PATENT SUBCLASS 968 / 318
.~.~.~ Free standing watches where the clockwork, on opening or closing the case, is ejected or returned by spring action, or possibly with a spring for opening or closing the case (cases with spring action cover subclass 310; wrist watches or pocket watches which can be used as free standing watches with the aid of certain parts of the case subclass 358) [G04B 37/04D5]


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968 /   HD   HOROLOGY

294  DD  CASES (cases with a special shape subclass 390; ornamentation of the case subclass 395; cartridges A45C 11/00-11/38) [G04B 37/00] {13}
307  DD  .~ Mounting the clockwork in the cases; shock absorbing mountings [G04B 37/04] {5}
314  DD  .~.~ Mounting relative to pocket and wrist watches allowing a rocking movement about a hinge or any other movement (covers and protective cases which may be removed completely either by direct removal or by sliding or turning subclass 300; ornamentation and interchangeable parts of cases, modifying the external appearance of the clockwork subclass 373) [G04B 37/04D] {5}
318.~.~.~ Free standing watches where the clockwork, on opening or closing the case, is ejected or returned by spring action, or possibly with a spring for opening or closing the case (cases with spring action cover subclass 310; wrist watches or pocket watches which can be used as free standing watches with the aid of certain parts of the case subclass 358) [G04B 37/04D5]