Patent US4200030A successfully refreshed from Google Patents.
DE916286C
Expired / Lapsed
DE
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Multi-part rock anchor for underground use in mining
Assignee: Gutehoffnungshutte Sterkrade AG
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Filing: 1951-11-10
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Granted: 1954-08-09
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Expires: 1971-11-10
Abstract
No abstract record available.
Inventors
- 👤 Dipl-Ing Ernst Biefang
- 👤 Dipl-Ing Wilhelm Schaefer
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-10-24 23:05
CPC Classifications
F; F16; F16B; F16B13/00; F16B13/04; F16B13/08; F16B13/0858; E; E21; E21D; E21D21/00; E21D21/008; F16B13/06; F16B13/063; F16B13/065; F16B13/0841; F16B13/0875
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1120368A
Cited
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