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Patent DE452564C successfully refreshed from Google Patents.
DE452564C
Expired / Lapsed
DE
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Method and device for driving routes in underground pits
Assignee: WILHELM KOLBE
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Filing: 1924-12-06
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Granted: 1927-11-12
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Expires: 1944-12-06
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-08 04:59
CPC Classifications
E; E21; E21D; E21D9/00; E21D9/10
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