DE857937C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Longwall mining
Assignee: Individual
•
Filing: 1950-05-07
•
Granted: 1952-12-04
•
Expires: 1970-05-07
Abstract
No abstract record available.
Inventors
- 👤 Konrad Grebe
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-09 12:52
CPC Classifications
E; E21; E21D; E21D23/00; E21D23/006; E21D23/0073; E21D15/00; E21D15/50; E21D15/54; E21D23/0078
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
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