Patent DE454974C successfully refreshed from Google Patents.
DE454974C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
air cleaner
Assignee: WILLIAM LAWRENCE O NEILL
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Filing: —
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Granted: 1928-01-20
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Expires: 1945-01-20
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-05 18:59
CPC Classifications
F; F02; F02M; F02M35/00; F02M35/02; F02M35/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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