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PCE
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DIFF Subgroup
F23L 17/10

wherein the top moves as a whole

Introduced: September 1968

Full Title

Inducing draught; Tops for chimneys or ventilating shafts; Terminals for flues > Tops for chimneys or ventilating shafts; Terminals for flues > wherein the top moves as a whole

No child classifications to compare. This is a leaf node in both IPC and CPC.