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FR64241E
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FR
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Collective safety device to safeguard the lives of minors working in mines against firedamp, dust, etc.
Assignee: Juste Wartelle
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Filing: 1953-04-29
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Granted: 1955-11-09
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Expires: 1973-04-29
Abstract
No abstract record available.
Inventors
- 👤 Juste Wartelle
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-31 22:28
CPC Classifications
E; E21; E21F; E21F11/00
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Total Claims: 0
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