DE600276C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Rotary drill
Assignee: ALEXANDER VARREN DR ING
•
Filing: 1931-08-16
•
Granted: 1934-07-20
•
Expires: 1951-08-16
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-10-24 17:44
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/46; E21B10/58
Claims Analysis
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References Cited (Backward Citations)
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