Patent DE67795C successfully refreshed from Google Patents.
DE67795C
Active / In Force
DE
Tunnel drilling machine with circular and at the same time axially rotating drills
Assignee: J. FITZ in Niwka bei Zosnowitz, Rs. P
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Filing: —
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Granted: —
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Expires: —
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
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Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-07 10:59
CPC Classifications
E; E21; E21D; E21D9/00; E21D9/10; E21D9/1006; E21D9/1013; E21D9/1033
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