TREA

composition and manufacture of the material used

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Industry

  • CPC
  • G04B17/227
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Parent Industries

GPHYSICS G04Horology G04BMECHANICALLY-DRIVEN CLOCKS OR WATCHES MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS G04B17/00Mechanisms for stabilising frequency

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G04B17/227composition and manufacture of the material used
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