Patent classifications
E
FIXED CONSTRUCTIONS
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E04
BUILDING
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E04C
STRUCTURAL ELEMENTS; BUILDING MATERIALS
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1/00
Building elements of block or other shape for the construction of parts of buildings
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E04C1/39
characterised by special adaptations, e.g. serving for locating conduits, for forming soffits, cornices, or shelves, for fixing wall-plates or door-frames, for claustra
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E04C1/395
for claustra, fences, planting walls, e.g. sound-absorbing
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