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FR37812E
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Extraction device for deep layers
Assignee: Rathjens
•
Filing: 1929-12-17
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Granted: 1931-01-24
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Expires: 1949-12-17
Abstract
No abstract record available.
Inventors
- 👤 Rathjens
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-03 23:20
CPC Classifications
E; E21; E21C; E21C47/00
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