CPC Subgroup Additional Only
H01J 2209/26 Sealing parts of the vessel to provide a vacuum enclosure
Full Title
Apparatus and processes for manufacture of discharge tubes > Sealing parts of the vessel to provide a vacuum enclosure
3 direct subcodes
Child Classifications
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- H01J 2209/261 Apparatus used for sealing vessels, e.g. furnaces, machines or the like
- H01J 2209/264 Materials for sealing vessels, e.g. frit glass compounds, resins or structures
- H01J 2209/265 Surfaces for sealing vessels