DIFF Subgroup
E05F 1/06 Mechanisms in the shape of hinges or pivots, operated by the weight of the wing
Introduced: September 1968
Full Title
Closers or openers for wings, not otherwise provided for in this subclass > gravity-actuated > for wings which lift during movement > Mechanisms in the shape of hinges or pivots, operated by the weight of the wing
Of 2 combined children, 0 exist in both systems.
2 codes are CPC-only extensions.
Child Classifications
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