Patent DE683560C successfully refreshed from Google Patents.
DE683560C
Expired / Lapsed
DE
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Process for the production of hollow valves for internal combustion engines
Assignee: Kloeckner Humboldt Deutz AG
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Filing: 1936-04-24
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Granted: 1939-11-29
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Expires: 1956-04-24
Abstract
No abstract record available.
Inventors
- 👤 Paul Rusch
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-10-25 20:39
CPC Classifications
B; B21; B21K; B21K1/00; B21K1/20; B21K1/22; B23; B23P; B23P13/00; F; F01; F01L; F01L3/00; F01L3/02
Claims Analysis
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References Cited (Backward Citations)
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