File:Testing CRTs at Research Enterprises.jpg

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Description
English: Employees of Research Enterprises Limited in Toronto test the lifetime of the company's cathode ray tubes, ultimately intended for use in radar and navigation systems.
Date
Source http://data2.archives.ca/e/e443/e011074246-v8.jpg
Author Nicholas Morant, National Film Board of Canada, Collections Canada MIKAN no. 3597884

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This Canadian work is in the public domain in Canada because its copyright has expired due to one of the following:
1. it was subject to Crown copyright and was first published more than 50 years ago, or

it was not subject to Crown copyright, and

2. it is a photograph that was created prior to January 1, 1949, or
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current19:41, 2 December 2014Thumbnail for version as of 19:41, 2 December 20141,000 × 757 (143 KB)Maury Markowitz (talk | contribs)User created page with UploadWizard

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