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FR92200E Expired / Lapsed FR ⏱️ 0.0 years remaining

Support frame for mine galleries

Assignee: RECH S IND ET SCIENT E R I S E
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Filing: 1967-04-28
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Granted: 1968-10-04
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Expires: 1987-04-28
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Abstract

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Inventors

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Bibliographic Details

Application Number —
Jurisdiction FR
Data Source google_patents
Last Synchronized 2026-11-08 07:41
CPC Classifications
E; E21; E21D; E21D11/00; E21D11/14; E21D11/18

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