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Patent FR671744A successfully refreshed from Google Patents.
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FR671744A Expired / Lapsed FR ⏱️ 0.0 years remaining

Power transformer

Assignee: Compteurs Schlumberger SA
•
Filing: 1929-03-20
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Granted: 1929-12-18
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Expires: 1949-03-20
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Abstract

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Bibliographic Details

Application Number —
Jurisdiction FR
Data Source google_patents
Last Synchronized 2026-10-27 11:42
CPC Classifications
H; H01; H01F; H01F38/00; H01F38/20; H01F38/22; H01F38/28; H01F38/30

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