FR1280241A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Development of tungsten carbide pellet drilling tools
Assignee: NOURRISSON LAURENT ETS
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Filing: 1961-02-03
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Granted: 1961-12-29
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Expires: 1981-02-03
Abstract
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Inventors
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Bibliographic Details
Application Number
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Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-23 07:01
CPC Classifications
B; B23; B23B; B23B51/00; B23B2260/00; B23B2260/138
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