Patent US6437545B2 successfully refreshed from Google Patents.
DE720433C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Drilling device for creating cavities in the ground
Assignee: HARRY BERNHARDT DIPL ING
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Filing: 1940-05-10
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Granted: 1942-05-05
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Expires: 1960-05-10
Abstract
No abstract record available.
Inventors
- 👤 Dipl-Ing Harry Bernhardt
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-10-30 08:56
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/26; E21B10/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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