AT93817B
Expired / Lapsed
AT
⏱️ 0.0 years remaining
Control device for the air supply of motor-driven fans of furnaces.
Assignee: Friedrich Vahldiek & Co Fa
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Filing: 1921-05-30
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Granted: 1923-08-10
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Expires: 1941-05-30
Abstract
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Inventors
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Bibliographic Details
Application Number
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Jurisdiction
AT
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google_patents
Last Synchronized
2026-10-22 22:22
CPC Classifications
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