US PATENT SUBCLASS 968 / 300
.~.~ With cover or protection device which can be completely removed, either by lifting off or by sliding, or by turning (protection covers, protection cases also against humidity) [G04B 37/00B6]

Current as of: June, 1999
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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}
295  DD  .~ For pocket watches and wrist watches [G04B 37/00B] {6}
300.~.~ With cover or protection device which can be completely removed, either by lifting off or by sliding, or by turning (protection covers, protection cases also against humidity) [G04B 37/00B6]