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Television and sound system
United States Patent 2285509
Inventors:
Goshaw, Irl R.
Publication Date:
06/09/1942
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Download PDF 2285509
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Assignee:
Goshaw, Irl R.
Primary Class:
348/783
Other Classes:
348/E05.143, 348/787, 352/36
International Classes:
H04N5/74