FR671250A
Expired / Lapsed
FR
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Improvements to ship portholes
Assignee: Rene Ducroux
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Filing: 1929-02-06
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Granted: 1929-12-10
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Expires: 1949-02-06
Abstract
No abstract record available.
Inventors
- 👤 Rene Ducroux
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-03 11:00
CPC Classifications
B; B63; B63B; B63B19/00; B63B2019/0007; B63B2019/0015; B63B2019/0023; B63B2019/0053
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References Cited (Backward Citations)
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