DE21823C
Active / In Force
DE
Mobile drilling rig with operating machinery suspended from it, which also puts a strain on the rotary drills
Assignee: J. TH. JONES und J. H. WILD in Leeds
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Filing: —
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Granted: —
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Expires: —
Abstract
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Inventors
No inventors recorded.
Bibliographic Details
Application Number
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Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-04 02:40
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/12; E21B7/128; E21B3/00; E21B3/02; E21B3/022; E21B15/00; E21B15/003
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