Patent DE720242C successfully refreshed from Google Patents.
DE720242C
Expired / Lapsed
DE
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Device to improve the screening performance
Assignee: HANS HEYMANN DR ING
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Filing: 1940-12-25
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Granted: 1943-03-24
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Expires: 1960-12-25
Abstract
No abstract record available.
Inventors
- 👤 Dr-Ing Hans Heymann
- 👤 Dr Heinz Kurz
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-02 14:39
CPC Classifications
B; B07; B07B; B07B1/00; B07B1/46
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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