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

Of 3 combined children, 0 exist in both systems.

3 codes are CPC-only extensions.

Note: 3 CPC extensions are marked as secondary classification only.

This code exists only in CPC.

Diff view requires codes present in both systems.