US PATENT SUBCLASS 968 / 954
.~ By building up characters using a combination of indicating elements, e.g., by using multiplexing techniques, etc. [G04G 9/08]


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968 /   HD   HOROLOGY

925  DD  VISUAL TIME- OR DATE-INDICATION MEANS [G04G 9/00] {9}
954.~ By building up characters using a combination of indicating elements, e.g., by using multiplexing techniques, etc. [G04G 9/08] {5}
955  DD  .~.~> Using multiplexing techniques [G04G 9/08B]
956  DD  .~.~> Provided with date indication [G04G 9/08C]
957  DD  .~.~> Provided with means for displaying at will a time indication or a date or a part thereof [G04G 9/08D]
958  DD  .~.~> By controlling light sources, e.g., electroluminescent diodes, etc. (subclass 935 takes precedence) [G04G 9/10] {3}
962  DD  .~.~> Using light valves, e.g., liquid crystals, etc. [G04G 9/12] {4}