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Patent FR781489A successfully refreshed from Google Patents.
FR781489A
Expired / Lapsed
FR
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Improvements to light board switches
Assignee: CIE GENERALE ENTPR ELEC
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Filing: 1934-10-05
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Granted: 1935-05-16
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Expires: 1954-10-05
Abstract
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FR
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2026-10-23 23:23
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