G04B39/004 - CPC Classification Index

ClassID:

179281 ⎘

G04B39/004 - CPC Classification

Classification description:

Watch crystals; Fastening or sealing of crystals; Clock glasses from a material other than glass

Sub-classes:

G04B39/006 » {out of wear resistant material, e.g. sapphire} 32

Recent Application in this class:

20250154367

2025-05-15

OBJECTS CONTAINING CRYSTALLINE BORON NITRIDE AND METHODS OF MANUFACTURING SAME

20200409309

2020-12-31

Watch

20200073330

2020-03-05

Mystery-drive mechanical or electromechanical timepiece

20190369564

2019-12-05

Optical device for a timepiece

20190143416

2019-05-16

Method for fabrication of a composite part

20190113890

2019-04-18

Method for cutting watch crystals

20190023564

2019-01-24

One-piece, hollow micromechanical part with several functional levels formed of a synthetic carbon allotrope based material

20160252882

2016-09-01

Plastic or electroformed watch case with removable crystal

20160161640

2016-06-09

Optical component and timepiece

#10

20150291435

2015-10-15

Seeded silicon carbide for devices and panels

#11

20130343165

2013-12-26

External piece for a timepiece and system of manufacturing the same

#12

20130153289

2013-06-20

Crystal used for closing the top of the case of a portable object and method of welding a crystal of this type

#13

20130098546

2013-04-25

METHOD FOR FIXING A CRYSTAL TO THE MIDDLE PART OF A WATCH CASE

#14

20110197445

2011-08-18

Method and device for securing a crystal with a counter strip

#15

20110006993

2011-01-13

METHOD OF FABRICATING A GLASS WITH CAPACITIVE TOUCH KEYS FOR AN ELECTRONIC INSTRUMENT AND INSTRUMENT COMPRISING THE SAME