DE513844C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Heat exchanger with tubes with a flat, lens-shaped cross-section, especially for preheating combustion air
Assignee: SEMJON W STAKIN
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Filing: 1928-03-25
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Granted: 1930-12-03
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Expires: 1948-03-25
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-07 18:46
CPC Classifications
F; F28; F28F; F28F1/00; F28F1/02; F23; F23M; F23M20/00; F28F9/00; F28F9/02; F28F9/0219; F28F9/0221
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