patent · · added 2 months ago
Light transmitting building panel
A light transmitting building panel comprising a flat central sheet and upper and lower corrugated sheets secured to the opposite faces of the flat central sheet, thereby to provid...
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patent · · added 2 months ago
A light transmitting building panel comprising a flat central sheet and upper and lower corrugated sheets secured to the opposite faces of the flat central sheet, thereby to provid...
patent · · added 2 months ago
Machine transcription of the US3236294 patent scan, 6 pages.
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Compound of the formula: ##STR1## in which the nucleus A is unsubstituted or substituted by one or two nitro, amino, alkyl, alkoxy, chlorine or bromine and the alkyl and alkoxy eac...
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