F28F

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Description

DETAILS OF HEAT-EXCHANGE OR HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION (water or air traps, air venting F16)

Subclasses

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Subclass Title
1/00 Tubular elements; Assemblies of tubular elements (specially adapted for movement F28F 5/00)
1/02 Tubular elements; Assemblies of tubular elements (specially adapted for movement F28F 5/00) Tubular elements of cross-section which is non-circular (F28F 1/08, F28F 1/1 take precedence)
1/04 Tubular elements; Assemblies of tubular elements (specially adapted for movement F28F 5/00) Tubular elements of cross-section which is non-circular (F28F 1/08, F28F 1/1 take precedence) polygonal, e.g. rectangular
1/06 Tubular elements; Assemblies of tubular elements (specially adapted for movement F28F 5/00) Tubular elements of cross-section which is non-circular (F28F 1/08, F28F 1/1 take precedence) crimped or corrugated in cross-section
1/08 Tubular elements; Assemblies of tubular elements (specially adapted for movement F28F 5/00) Tubular elements crimped or corrugated in longitudinal section

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