DE369463C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Firedamp-proof shaft duct
Assignee: Siemens Schuckertwerke AG
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Filing: 1921-07-15
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Granted: 1923-02-19
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Expires: 1941-07-15
Abstract
No abstract record available.
Inventors
- 👤 Hans Richter
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-10-31 23:30
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/44; F16J15/447; F16J15/4472
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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