Patent US3537251A successfully refreshed from Google Patents.
Patent DE732733C successfully refreshed from Google Patents.
DE732733C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Acoustic branch filter consisting of two or more resonators, especially for internal combustion engines
Assignee: Eberspaecher Climate Control Systems GmbH and Co KG
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Filing: 1937-12-08
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Granted: 1943-03-10
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Expires: 1957-12-08
Abstract
No abstract record available.
Inventors
- 👤 Dr-Ing Herbert Martin
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-02 19:40
CPC Classifications
F; F01; F01N; F01N1/00; F01N1/003; F01N1/006; F01N1/02; F01N1/023; F01N2490/00; F01N2490/15; F01N2490/155
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References Cited (Backward Citations)
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