DE704188C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
System for preventing cold air from entering the entrances to buildings
Assignee: Winkelstraeter & Sure
•
Filing: 1934-12-12
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Granted: 1941-03-25
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Expires: 1954-12-12
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-05 13:43
CPC Classifications
F; F24; F24F; F24F9/00
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References Cited (Backward Citations)
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