968 / | HD | HOROLOGY |
651 | DD | GRIPPING, HOLDING OR SUPPORTING DEVICES (stands in general F16M; for instruments G01D 11/30, B01L) [G04D 1/00] {10} |
673 | DD | .~ Tools for setting springs [G04D 1/04] {2} |
674 | .~.~ For springs of driving mechanisms (machines therefor subclass 710) [G04D 1/04B] |