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Journal of the Society of Motion Picture Engineers ( Volume: 48, Issue: 5, May 1947)
[ACTIVE]

Historical Development of Sound Films

Metadata

Publisher
SMPTE
Doc Type
Journal Article
Article Type
research-article
Abstract
Aug. 1926: De Forest brought suit against Fox and Case, charging infringement of the Ries recording and reproducing patents, two of his patents covering the use of a gas discharge for sound recording, and a patent on the use of a light-sensitive cell with an audion amplifier. (De Forest had purchased the Ries recording patent October 15, 1025. He did not, however, actually acquire the Ries reproducing patent until November 16, 1920, although it is believed he held an option on this and several Ries applications before this time.)
Publication Date
1947-05-01
DOI
10.5594/J12694
Link
https://doi.org/10.5594/J12694
Author(s)
E. I. Sponable
Source Data (JSON)

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E. I. Sponable; Historical Development of Sound Films, Journal of the Society of Motion Picture Engineers ( Volume: 48, Issue: 5, May 1947); SMPTE, 1947. Available at https://doi.org/10.5594/J12694
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E. I. Sponable; Historical Development of Sound Films, Journal of the Society of Motion Picture Engineers ( Volume: 48, Issue: 5, May 1947); SMPTE, 1947. Available at https://doi.org/10.5594/J12694

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E. I. Sponable; Historical Development of Sound Films, Journal of the Society of Motion Picture Engineers ( Volume: 48, Issue: 5, May 1947); SMPTE, 1947. Available at https://doi.org/10.5594/J12694
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<span class="citation">E. I. Sponable; <cite>Historical Development of Sound Films</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 48, Issue: 5, May 1947); SMPTE, 1947. Available at <a href="https://doi.org/10.5594/J12694" target="_blank" rel="noopener">https://doi.org/10.5594/J12694</a></span>

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Preview:
E. I. Sponable; Historical Development of Sound Films, Journal of the Society of Motion Picture Engineers ( Volume: 48, Issue: 5, May 1947); SMPTE, 1947
doi: 10.5594/J12694
url: https://doi.org/10.5594/J12694
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<li>
E. I. Sponable; <cite id="bib-10-5594-j12694">Historical Development of Sound Films</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 48, Issue: 5, May 1947); SMPTE, 1947
<span class="doi">10.5594/J12694</span>
</li>