FR972849A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Improvements in tube manufacturing processes
Assignee: TUBES DE VALENCIENNES ET DENAI
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Filing: 1941-05-16
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Granted: 1951-02-05
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Expires: 1961-05-16
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
2026-10-29 17:29
CPC Classifications
B; B23; B23K; B23K13/00; B23K13/04; B23K13/01; B23K13/02
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