CA933146A
Expired / Lapsed
CA
⏱️ 0.0 years remaining
Method of drilling and casing a large diameter borehole
Assignee: Becker Drills Ltd
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Filing: 1970-06-19
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Granted: 1973-09-04
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Expires: 1990-06-19
Abstract
No abstract record available.
Inventors
- 👤 Norman D. Becker
Bibliographic Details
Application Number
—
Jurisdiction
CA
Data Source
google_patents
Last Synchronized
2026-11-06 09:48
CPC Classifications
E; E21; E21B; E21B21/00; E21B21/12; E21B7/00; E21B7/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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