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FR1407929A
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Method and devices for shoring the roof of a vein in a bottom mine site
Assignee: Karl Maria Groetschel
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Filing: 1964-08-27
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Granted: 1965-08-06
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Expires: 1984-08-27
Abstract
No abstract record available.
Inventors
- 👤 Karl Maria Groetschel
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-04 15:59
CPC Classifications
E; E21; E21D; E21D23/00; E21D23/006; E21D23/0069
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References Cited (Backward Citations)
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