Patent DE569103C successfully refreshed from Google Patents.
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DE569103C Expired / Lapsed DE ⏱️ 0.0 years remaining

Sound film

Assignee: Tobis Tonbild Syndikat GmbH
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Filing: —
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Granted: 1933-01-28
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Expires: 1950-01-28
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Abstract

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Bibliographic Details

Application Number —
Jurisdiction DE
Data Source google_patents
Last Synchronized 2026-10-26 16:30
CPC Classifications
G; G03; G03B; G03B31/00; G03B31/06; H; H04; H04N; H04N3/00; H04N3/36

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