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FR2506438A1
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Perfected concentrator solar collector
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US4206917A
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Sports racquet
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FR2403527A1
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Solar energy recovery equipment - has partitions with entirely reflective surfaces forming truncated cone sections
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FR2401389A1
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Solar reflector support which can collapse like an umbrella - for a variable focus motion or to obtain diffuse reflection
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FR2393245A1
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Lightweight collector absorbing solar heat into coloured liquid - has flexible-walled insulation containers enclosing similar circulation chamber
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FR2380754A1
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Tooth brush with shield - consists of disc fitted onto handle to prevent soiling of surrounding objects
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CH562383A5
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Externally reinforced circular or oval swimming pool - has encompassing metal bands closed by stressing links
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