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FR1306138A
Expired / Lapsed
FR
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elements of underground ducts intended for the transport and transfer of liquids
Assignee: Houilleres du Bassin du Nord et du Pas de Calais
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Filing: 1961-09-02
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Granted: 1962-10-13
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Expires: 1981-09-02
Abstract
No abstract record available.
Inventors
- 👤 Jules Soyeur
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-26 22:31
CPC Classifications
E; E02; E02B; E02B11/00; E02B11/005
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