Patent US4568293A successfully refreshed from Google Patents.
Patent AT203073B successfully refreshed from Google Patents.
AT203073B
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Circuit arrangement for regulating the basic brightness and the gradation of an electro-optical display device, in particular in a television receiver
Assignee: Philips Nv
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Filing: 1958-03-06
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Granted: 1959-04-25
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Expires: 1978-03-06
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AT
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2026-10-24 20:00
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