CPC Subgroup
H01J 29/86 Vessels; Containers; Vacuum locks
Full Title
Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00 > Vessels; Containers; Vacuum locks
8 direct subcodes
Child Classifications
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- H01J 29/87 Arrangements for preventing or limiting effects of implosion of vessels or containers
- H01J 29/88 provided with coatings on the walls thereof; Selection of materials for the coatings
- H01J 29/89 Optical or photographic arrangements structurally combined with the vessel