Patent CA1005433A successfully refreshed from Google Patents.
CA1005433A
Expired / Lapsed
CA
⏱️ 0.0 years remaining
Percussion drill rod
Assignee: Sandco Ltd
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Filing: 1974-06-19
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Granted: 1977-02-15
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Expires: 1994-06-19
Abstract
No abstract record available.
Inventors
- 👤 Hans P.O. Lundstrom
- 👤 Ernst L. Johansson
Bibliographic Details
Application Number
—
Jurisdiction
CA
Data Source
google_patents
Last Synchronized
2026-11-02 19:09
CPC Classifications
E; E21; E21B; E21B6/00; E21B17/00; E21B7/00; E21B7/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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