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Rights In Copyright - Rights-holder(s) Unlocatable or Unidentifiable Remove constraint Rights: In Copyright - Rights-holder(s) Unlocatable or Unidentifiable Date 1945 to 1949 Remove constraint Date: <span class='from'>1945</span> to <span class='to'>1949</span>

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    • circa 1940 – circa 1979

    Though the photo set is identified as Beckman with "employees," some of the photographs depict ceremonies and visits to non-corporate locations, like CalTech. Some photographs are attributed, dated (1941, 1962, 1967),…

    • 1942 – 1959

    The Model R Industrial pH Meter was first produced in 1942, although this photograph was likely taken much later.

    Arnold Beckman invented his first pH meter in 1934 at the request of a chemist from the California…

    • 1950
    • 1940
    • 1934 – 1935
    • 1946
    • Undated
    • 1949

    A Pasadena garage was the first home of the National Postal Meter Company, founded by Arnold Beckman in 1934. The company soon became National Technical Laboratories, with a focus on pH meters. In 1935, the company…

    • 1940s

    This glass dumbbell was key to the functioning of the Pauling Oxygen Meter, although production was tricky and originally required a human glass blower to shape the hollow ends of the tiny dumbbell with puffs of breath.…

    • 1940s

    An unidentified man with a tattoo on his forearm has removed the case of a Model B DU Spectrophotometer in order to demonstrate its functions to three other (also unidentified) men.

    The first Beckman Instruments DU…

    • 1940s

    Developed from a Linus Pauling design during WWII, the technology behind Beckman Instruments’ oxygen analyzers ended up doing such diverse jobs as monitoring astronauts’ respiration, maintaining packaged food safety,…

    • 1940s

    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
    • 1940s
    • 1949

    The bordered photograph featuring Coca-Cola bottles and ice buckets is dated 1949. The bordered photographs of children are dated 1946. The exact date of the photographs without white borders is unknown.

    • 1949-Sep-22

    Concerns submission of a manuscript to Mulliken for review, and results of Shull's latest work on quantum theory.

    • 1949-Oct-18

    Contains suggestions from Mulliken to Shull for changes in one of Shull's manuscripts.

    • 1949-Jan-05

    Concerns Robert B. Woodward's synthesis of methochloride of sempervirine. Also discusses an error made by Julian in the lab and communicated to Witkop in an earlier letter.

    • 1940s

    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…

    • 1940s

    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…

    • 1940s

    This building at 820 Mission Street was the first built exclusively for National Technical Laboratories in 1940.

    • 1949-Nov-11

    Letter between Robert S. Mulliken and Harrison Shull, American quantum chemists.

    • 1949-Dec-05

    Letter between Robert S. Mulliken and Harrison Shull, American quantum chemists.

    • 1949

    In the amount of one thousand, this company scrip issued by Georgi Dimitrov Chemical Company is printed to look like a banknote. Backside of scrip has an illustration of the chemical complex, which is bustling with…

    • 1948-Oct-07

    A chemist with Standard Oil Company's Research Department, Steininger explored the possible creation of an instrument to analyze and record hydrogen sulfide concentrations in oil refineries, a safety measure otherwise…

    • 1948

    The ultraviolet Model B was marketed as an easier to use and more affordable alternative to the Beckman DU Spectrophotometer.

    The first Beckman Instruments DU Spectrophotometer was developed in 1940, when the company…

    • 1948-Apr-06

    Letter between Robert S. Mulliken and Harrison Shull, American quantum chemists, concerning awarding of a National Research Fellowship to Shull.

    • 1948-Mar-01

    Letter between Robert S. Mulliken and Harrison Shull, American quantum chemists, concerning possibility of appointing Shull as a Research Associate if he does not receive a National Research Fellowship.