US PATENT SUBCLASS 968 / 577
PRODUCING OPTICAL TIME SIGNALS AT PREFIXED TIMES BY ELECTRIC MEANS [G04C 19/00]
Current as of:
June, 1999
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968 /
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HOROLOGY
577
PRODUCING OPTICAL TIME SIGNALS AT PREFIXED TIMES BY ELECTRIC MEANS [G04C 19/00]
{2}
578
DD
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> By electric lamps [G04C 19/02]
579
DD
.~
> By indicating members moved electrically, e.g., flap, band, etc. [G04C 19/04]
