US PATENT SUBCLASS 968 / 290
.~ For extremely long running times [G04B 33/12]
Current as of:
June, 1999
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968 /
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HOROLOGY
284
DD
CALIBERS (disposition of components of the automatic winding mechanism in relation to the clockwork subclass 53) [G04B 33/00]
{8}
290
.~ For extremely long running times [G04B 33/12]
