Patent FR1128024A successfully refreshed from Google Patents.
FR1128024A
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Improvements made to expansion bolts, for support or anchoring, especially in mine roofs
Assignee: Jean Pierrard
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Filing: 1955-06-18
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Granted: 1957-01-02
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Expires: 1975-06-18
Abstract
No abstract record available.
Inventors
- 👤 Jean Pierrard
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-27 07:19
CPC Classifications
E; E21; E21D; E21D21/00; E21D21/008
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