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    Retractable cover

    New search for: BLACK ROBERT DAVID
    New search for: BLACK JOHN ALEXANDER

    A retractable cover for use over an opening such as a swimming pool is described. The cover comprises a number i (i≥3) of supporting joist means, each joist having a top and bottom surface; an even number j (j

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    Retractable cover

    New search for: BLACK ROBERT DAVID
    New search for: BLACK JOHN ALEXANDER

    A retractable cover for use over an opening such as a swimming pool is described. The cover comprises a number i (i≥3) of supporting joist means, each joist having a top and bottom surface; an even number j (j

    Access

    Download

    Retractable cover

    New search for: BLACK ROBERT DAVID
    New search for: BLACK JOHN ALEXANDER

    A retractable cover for use over an opening such as a swimming pool is described. The cover comprises a number i (i≥3) of supporting joist means, each joist having a top and bottom surface; an even number j (j

    Access

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    Access

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    Document information
    Title:

    Retractable cover

    Contributors:

    BLACK ROBERT DAVID (author) / BLACK JOHN ALEXANDER (author)

    Publication date:

    2017-02-23

    Type of media:

    Patent

    Type of material:

    Electronic Resource

    Language:

    English

    Classification:

    IPC:  E04H Gebäude oder ähnliche Bauwerke für besondere Zwecke , BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES / E04B Allgemeine Baukonstruktionen , GENERAL BUILDING CONSTRUCTIONS / E04C STRUCTURAL ELEMENTS , Bauelemente / E04G SCAFFOLDING , Baugerüste

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