1702 spiral focus energy is a one way mirror or ra…
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-20-316-1_3455
1702 spiral focus energy is a one way mirror or ra…
1702 spiral focus energy is a one way mirror or rather said as a one sided reflective one side transparent solar energy glass window for building a reflective solar tunnel spirally to amplify the source copyright © 2019 christopher gabriel brown patent abstract utility patent christopher g brown 3714-100 catalog/product/capture1701 Christopher G Brown Submitted On December 4, 2019 ISBN-13: 978-1658972871
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