Skip to content
PCE
Search Classifications
Search for IPC and CPC classification codes or keywords
DIFF Main Group
F21V 31/00

Gas-tight or water-tight arrangements

Introduced: September 1968

Of 3 combined children, 2 exist in both systems.

1 codes are CPC-only extensions.

Child Classifications

Navigate with arrow keys, Enter to open

  • F21V 31/005 CPC only CPC only
  • F21V 31/03 with provision for venting since 2000 IPC+CPC Available in IPC and CPC
  • F21V 31/04 Provision of filling media IPC+CPC Available in IPC and CPC