TREA

by screwing the crown onto the case

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Industry

  • CPC
  • G04B37/103
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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 G04B37/00Cases

Current Industry

G04B37/103by screwing the crown onto the case
Industries