CH459285A
Expired / Lapsed
CH
⏱️ 0.0 years remaining
Method and machine for driving a tunnel or adit
Assignee: Wirth Alfred & Co Kg
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Filing: 1966-10-31
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Granted: —
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Expires: 1986-10-31
Abstract
No abstract record available.
Inventors
- 👤 Willi Dipl Ing Hildebrand
- 👤 Steufmehl Willi
Bibliographic Details
Application Number
—
Jurisdiction
CH
Data Source
google_patents
Last Synchronized
2026-11-05 17:39
CPC Classifications
E; E21; E21D; E21D9/00; E21D9/10; E21D9/11; E21D9/112; E21D9/115; E21B; E21B4/00; E21B4/18; E21B7/00; E21B7/28
Claims Analysis
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References Cited (Backward Citations)
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