FR540797A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Improvements in electric arc welding processes and devices
Assignee: Compagnie Francaise Thomson Houston SA
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Filing: 1921-03-31
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Granted: 1922-07-18
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Expires: 1941-03-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-30 02:31
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/12; B23K9/133; B23K9/1336; B23K9/124; B23K9/125
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