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FR893423A
Expired / Lapsed
FR
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Impact drill bit bit with hard metal inserts
Assignee: WALLRAMIT HARDMETAAL MIJ NV
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Filing: 1943-04-09
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Granted: 1944-06-08
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Expires: 1963-04-09
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-25 12:25
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/46; E21B10/56
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