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FR658977A
(en)
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Method of developing positive diazotypes
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FI12105A
(en)
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Method of making refractory brick
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FR701758A
(en)
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Method of covering the surfaces of refractory bodies
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US1830300A
(en)
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Method of obtaining hydroxy-phenyl-azo-alpha-alpha-diamino-pyridines
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FR678681A
(en)
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Production of new coloring materials
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FR655871A
(en)
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Production of benzyloxyethanol
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FR36451E
(en)
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Refractory cement
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FR667706A
(en)
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Refractory cement
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FI12264A
(en)
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Brick
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FR592876A
(en)
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Hollow brick
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FR728593A
(en)
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Brick
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FR674616A
(en)
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Production of new coloring materials
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FR731330A
(en)
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Partitioned brick
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FR666134A
(en)
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Process for the construction of ceilings
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FR601207A
(en)
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Brick
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SU4284A1
(en)
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Method of making explosive
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(en)
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METHOD OF MAKING TSAROUCHI.
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FR682706A
(en)
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Production of new metallic coloring materials
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(en)
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Hollow brick masonry
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(en)
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Bricks for roofing
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(en)
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Partitioned hollow brick construction
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FR669959A
(en)
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Advanced furnace
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GR2090B
(en)
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METHOD FOR CONSTRUCTION OF GAS CONCRETE.
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FR661805A
(en)
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Glass furnace
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FR669687A
(en)
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Brick firing process
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