CH86349A
Expired / Lapsed
CH
⏱️ 0.0 years remaining
Steam boiler system with a heat exchange device for preheating the combustion air.
Assignee: Constam Ernst
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Filing: 1919-09-23
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Granted: —
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Expires: 1939-09-23
Abstract
No abstract record available.
Inventors
- 👤 Constam Ernst
Bibliographic Details
Application Number
—
Jurisdiction
CH
Data Source
google_patents
Last Synchronized
2026-10-27 10:59
CPC Classifications
F; F22; F22B; F22B31/00; F22B31/08
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Total Claims: 0
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References Cited (Backward Citations)
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