US PATENT SUBCLASS 968 / 724
.~ Lathes, with one or more supports; burnishing machines, with one or more supports (metal lathes B23B; automatic lathes B23B; grinding and polishing in general class B24) [G04D 3/02]

Current as of: June, 1999
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968 /   HD   HOROLOGY

685  DD  WATCHMAKER'S OR WATCH-REPAIRER'S MACHINES OR TOOLS FOR WORKING MATERIALS (metal working in general Class B23) [G04D 3/00] {7}
724.~ Lathes, with one or more supports; burnishing machines, with one or more supports (metal lathes B23B; automatic lathes B23B; grinding and polishing in general class B24) [G04D 3/02] {2}
725  DD  .~.~> Components [G04D 3/02B] {1}
727  DD  .~.~> For the manufacture of special components for clockworks [G04D 3/02C] {4}