US PATENT SUBCLASS 968 / 266
.~ Plates; bridges; cocks [G04B 29/02]

Current as of: June, 1999
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968 /   HD   HOROLOGY

265  DD  FRAMEWORKS [G04B 29/00] {2}
266.~ Plates; bridges; cocks [G04B 29/02] {3}
267  DD  .~.~> Bridges [G04B 29/02B]
268  DD  .~.~> Cocks [G04B 29/02C]
269  DD  .~.~> Materials and manufacturing (alloys, in general C22C) [G04B 29/02S]