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DE514472C Expired / Lapsed DE ⏱️ 0.0 years remaining

Fault reporting device on smoke detectors

Assignee: Walther and Co AG
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Filing: —
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Granted: 1931-06-12
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Expires: 1948-06-12
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Abstract

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Bibliographic Details

Application Number —
Jurisdiction DE
Data Source google_patents
Last Synchronized 2026-10-25 09:22
CPC Classifications
G; G08; G08B; G08B17/00; G08B17/10; G08B17/11; G08B17/113

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