TREA

Watch crystals Fastening or sealing of crystals Clock glasses

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Industry

  • CPC
  • G04B39/00
This industry / category may be too specific. Please go to a parent level for more data

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

Current Industry

G04B39/00Watch crystals Fastening or sealing of crystals Clock glasses

Sub Industries

G04B39/002made of glass G04B39/004from a material other than glass G04B39/006out of wear resistant material G04B39/008with means for magnified reading G04B39/02Sealing crystals or glasses G04B39/025without special sealing parts
Industries