File:Letter from Durand Churchill, Jr. to Arnold O. Beckman - DPLA - 464777db97b4e394b06a2a84264cd997.jpg

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Letter from Durand Churchill, Jr. to Arnold O. Beckman   (Wikidata search (Cirrus search) Wikidata query (SPARQL)  Create new Wikidata item based on this file)
Creator
InfoField
Churchill, Durand Jr
Title
Letter from Durand Churchill, Jr. to Arnold O. Beckman
Description
Letter regarding specifications for Pauling Oxygen Meter for use in British military aircraft. 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, and preventing blindness in newborn babies.
Date 1944-Apr-12
institution QS:P195,Q5090408
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(Reusing this file)
Public domain
Public domain
This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1929, and if not then due to lack of notice or renewal. See this page for further explanation.
United States
United States
This image might not be in the public domain outside of the United States; this especially applies in the countries and areas that do not apply the rule of the shorter term for US works, such as Canada, Mainland China (not Hong Kong or Macao), Germany, Mexico, and Switzerland. The creator and year of publication are essential information and must be provided. See Wikipedia:Public domain and Wikipedia:Copyrights for more details.

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current02:28, 8 January 2023Thumbnail for version as of 02:28, 8 January 20232,555 × 3,320 (1.16 MB)DPLA bot (talk | contribs)Uploading DPLA ID dpla:464777db97b4e394b06a2a84264cd997

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