Patent US2566684A successfully refreshed from Google Patents.
Patent DE437812C successfully refreshed from Google Patents.
DE437812C
Expired / Lapsed
DE
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Process for the production of double pipes for heat exchange purposes
Assignee: Siller & Rodenkirchen GmbH
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Filing: 1925-01-14
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Granted: 1926-11-26
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Expires: 1945-01-14
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-01 06:06
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/15; B21C37/154; B21D; B21D53/00; B21D53/02; B21D53/06
Claims Analysis
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References Cited (Backward Citations)
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