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Genre Charts, diagrams, etc Remove constraint Genre: Charts, diagrams, etc Date 1945 to 1949 Remove constraint Date: <span class='from'>1945</span> to <span class='to'>1949</span>

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    • 1949 (Original design)
    • circa 1957 (Date attributed to slide)

    Top and perspective views of a graphic representation of the periodic table of chemical elements in the style of a helix wound on one cylinder with interrupted short and medium periods. This type of table was originated…

    • circa 1957 (Date attributed to slide)
    • 1948 (Original design)

    Graphic representation of the periodic table of chemical elements designed as a left-side electronic configuration series table "stretched" in a vertical direction. This table was originated by David T. Gibson in 1948…

    • circa 1957 (Date attributed to slide)
    • 1949 (Original design)

    Graphic representation of the periodic table of chemical elements designed as a series table with sixteen groups. This table was originated by G.M. Murashov in 1949 and and classified by Mazurs as Type IC3-2a in his…

    • 1937 – 1945 (Original design)
    • circa 1957 (Date attributed to slide)

    Graphic representation of the periodic table of chemical elements constructed as a triangle. This type of table was originated by Henry A. Wagner and Harold Simmons Booth in 1945 after an incomplete drawing by Emil V.…

    • 1949-Mar-08

    Patent #2,463,743 for a hydrogen tube designed by H. Howard Cary and Warren Baxter during their time at National Technical Labs, a precursor to Beckman Instruments. This tube was designed for use in UV…

    • Dwg. No. 662-000740
    • 1949-Feb-08

    Arnold Beckman invented his first pH meter in 1934 at the request of a chemist from the California citrus industry, who needed an accurate way to measure the acidity of his product. The resulting instrument kicked off…

    • 1940s

    Rainbow-colored periodic table of the elements designed in the style of an irregular spiral. Per text accompanying the table, the colors and construction of the table are designed to express the relationship among…

    • 1946-Oct-17

    Arnold Beckman invented his first pH meter in 1934 at the request of a chemist from the California citrus industry, who needed an accurate way to measure the acidity of his product. The resulting instrument kicked off…

    • 1946-Oct-16

    Arnold Beckman invented his first pH meter in 1934 at the request of a chemist from the California citrus industry, who needed an accurate way to measure the acidity of his product. The resulting instrument kicked off…

    • 1946-May-21

    The Beckman Instruments IR spectrophotometers began as a request from the Office of Rubber Reserve to Arnold O. Beckman in 1942, asking for an infrared spectrophotometer that they could use to create rubber. Under this…

    • 1946-May-21

    The Beckman Instruments IR spectrophotometers began as a request from the Office of Rubber Reserve to Arnold O. Beckman in 1942, asking for an infrared spectrophotometer that they could use to create rubber. Under this…

    • 1946-May-20

    The Beckman Instruments IR spectrophotometers began as a request from the Office of Rubber Reserve to Arnold O. Beckman in 1942, asking for an infrared spectrophotometer that they could use to create rubber. Under this…

    • 1945

    These instructions for phototube replacement describe some of the inner workings of the first model D/DU spectrophotometer made by National Technical Laboratories in 1945. The phototube being replaced in these…

    • 1945-Feb-10

    The Beckman Instruments IR spectrophotometers began as a request from the Office of Rubber Reserve to Arnold O. Beckman in 1942, asking for an infrared spectrophotometer that they could use to create rubber. Under this…

    • 1945-Feb-08

    The Beckman Instruments IR spectrophotometers began as a request from the Office of Rubber Reserve to Arnold O. Beckman in 1942, asking for an infrared spectrophotometer that they could use to create rubber. Under this…

    • Dwg. No. CD-2000B
    • 1945-Jan-24

    The diagram is annotated in red and blue ink, indicating first and second position.

    Arnold Beckman invented his first pH meter in 1934 at the request of a chemist from the California citrus industry, who needed an…