TREA

Ingestrom; Curt Holger

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  • Alvangen, SE
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  • Information Patent Grant

    Building block
    • Patent number 4,130,973
    • Issue date Dec 26, 1978
    • Ingestrom; Curt Holger
    • Stig O. S. Gustavsson
    • B28 - WORKING CEMENT, CLAY, OR STONE

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