Patent DE334060C successfully refreshed from Google Patents.
DE334060C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Process for conveying backfilled material in coal mining by means of a jet apparatus
Assignee: KARL PARTSCH
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Filing: 1919-03-27
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Granted: 1921-03-09
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Expires: 1939-03-27
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-10-30 09:57
CPC Classifications
E; E21; E21F; E21F15/00; E21F15/08
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