US PATENT SUBCLASS 968 / 252
.~ Stepwise or on determined values (subclass 255 takes precedence) [G04B 27/00F]
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968 /
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HOROLOGY
248
DD
MECHANICAL DEVICES FOR SETTING THE TIME-INDICATING MEANS [G04B 27/00]
{8}
252
.~ Stepwise or on determined values (subclass 255 takes precedence) [G04B 27/00F]
