Patent DE698262C successfully refreshed from Google Patents.
DE698262C
Expired / Lapsed
DE
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Process and device for the darkening of light surfaces in buildings
Assignee: Individual
•
Filing: 1937-12-11
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Granted: 1940-11-06
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Expires: 1957-12-11
Abstract
No abstract record available.
Inventors
- 👤 Hermann Kluftinger
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-10-22 22:15
CPC Classifications
F; F41; F41H; F41H9/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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