patent · · added 2 months ago
Solar energy collector - has vertical pipe and pump for spraying water over inner surface of inner one of two concentric spheres
Machine transcription of the FR2479433A2 patent scan, 8 pages.
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patent · · added 2 months ago
Machine transcription of the FR2479433A2 patent scan, 8 pages.
patent · · added 2 months ago
patent · · added 2 months ago
patent · · added 2 months ago
patent · · added 2 months ago
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