FR905691A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Elastic retaining frame of iron, arc-shaped, made of doublet sections, rails, etc., with equal or unequal wings, for mine gallery
Assignee: Thyssen AG
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Filing: 1944-07-06
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Granted: 1945-12-11
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Expires: 1964-07-06
Abstract
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Bibliographic Details
Application Number
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Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-01 15:49
CPC Classifications
E; E21; E21D; E21D11/00; E21D11/14; E21D11/18; E21D11/22
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