Patent DE857033C successfully refreshed from Google Patents.
DE857033C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Hydraulically swiveling mast for deep drilling purposes
Assignee: Individual
•
Filing: 1951-05-20
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Granted: 1952-11-27
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Expires: 1971-05-20
Abstract
No abstract record available.
Inventors
- 👤 Wilhelm Leipold
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-01 14:10
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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