1 result for “Owens-Corning Fiberglas”
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Patent · June 7, 1960
Porous ceramic plant husbandry equipment and methods of production thereof (US Patent 2,939,247, 1960)
…It was assigned to Johns Manville. The patent's description opens: This invention relates to fluid-permeable ceramic plant husbandry equipment which has been rendered parasitic minor plant growth proof and to methods for the production…