Patent CA1012564A successfully refreshed from Google Patents.
CA1012564A
Expired / Lapsed
CA
⏱️ 0.0 years remaining
Method of underground mining
Assignee: PPG Architectural Coatings Canada Inc
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Filing: 1975-07-11
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Granted: 1977-06-21
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Expires: 1995-07-11
Abstract
No abstract record available.
Inventors
- 👤 Leslie C. Lang
Bibliographic Details
Application Number
—
Jurisdiction
CA
Data Source
google_patents
Last Synchronized
2026-11-05 13:10
CPC Classifications
E; E21; E21D; E21D13/00; E21C; E21C41/00; E21C41/16; E21C41/22; E21D9/00; E21D9/006; F; F42; F42D; F42D1/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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