FR891261A
Expired / Lapsed
FR
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Support method for mine galleries
Assignee: Gutehoffnungshutte Oberhausen AG
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Filing: 1943-02-17
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Granted: 1944-03-02
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Expires: 1963-02-17
Abstract
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Bibliographic Details
Application Number
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Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-03 11:36
CPC Classifications
E; E21; E21D; E21D17/00; A; A23; A23K; A23K30/00; A23K30/10; A23K30/15
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