FR1126394A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Multi-piece hydraulic mine prop
Assignee: Gutehoffnungshutte Sterkrade AG
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Filing: 1955-06-24
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Granted: 1956-11-21
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Expires: 1975-06-24
Abstract
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Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-08 18:00
CPC Classifications
E; E21; E21D; E21D15/00; E21D15/58; E21D15/585; E21D15/586; E21D15/587; B; B66; B66F; B66F3/00; B66F3/24; B66F3/25; B66F3/42
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