CH314252A
Expired / Lapsed
CH
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Ventilation device with self-regulation
Assignee: Pol Eugene Josef Marie Van De
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Filing: 1953-04-20
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Granted: —
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Expires: 1973-04-20
Abstract
No abstract record available.
Inventors
- 👤 Petrus Hekelaar Johannes
Bibliographic Details
Application Number
—
Jurisdiction
CH
Data Source
google_patents
Last Synchronized
2026-11-05 14:52
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/00642; B60H1/00664; B60H1/00671; B60H1/00685; B60H1/24; F; F24; F24F; F24F11/00; F24F11/70; F24F11/72; F24F11/74; F24F11/745; F24F7/00; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7784; Y10T137/7786; Y10T137/7792
Claims Analysis
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References Cited (Backward Citations)
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