DE343398C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Device for the production of finned tubes by helically winding heated wrought iron fins onto a core tube
Assignee: Individual
•
Filing: 1920-08-13
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Granted: 1921-11-01
•
Expires: 1940-08-13
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-10-31 14:10
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/15; B21C37/22; B21C37/26
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References Cited (Backward Citations)
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