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FI1451A
(en)
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The structure of the roof tiles is called Stenbäck roofing
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FR331848A
(en)
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Metal carcass for concrete ceilings and roofs
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CH27801A
(en)
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Fermentation vessel made of iron-reinforced cement concrete
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CH20838A
(en)
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Roof tiles
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CH19814A
(en)
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Roof tiles
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CH24718A
(en)
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Roofing
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CH26342A
(en)
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Cement roof
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CH23076A
(en)
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Snow protection roof tiles
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CH29537A
(en)
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Cement roof panel
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CH23428A
(en)
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Roof construction for factory buildings
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CH15028A
(en)
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Novel brick
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CH29267A
(en)
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Roof construction
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GB190204459A
(en)
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Improvements in the Construction of Floors, Ceilings, Balconies, Stairways, Roofs and the like
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CA84875A
(en)
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Roofing tile and roof
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FR333810A
(en)
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Improvements applicable to bricks
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CH28168A
(en)
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Large span arches made of boards for roofs of temporary buildings
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DK677C
(en)
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Device for the production of diamond-shaped cement roof tiles.
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CH17310A
(en)
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Cement roof interlocking tiles
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CH25108A
(en)
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Cement ceiling
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CH12210A
(en)
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Interlocking roof tiles
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AT6242B
(en)
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Impregnation process to remove the water permeability of fired clay roof tiles.
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CH26050A
(en)
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Arched concrete cable deck
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CA84424A
(en)
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Roofing tile
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CH23519A
(en)
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Skylight window lock
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CH28166A
(en)
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Dismountable building
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