Patent FR523211A successfully refreshed from Google Patents.
FR523211A
Expired / Lapsed
FR
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Improvements to dry docks, locks and other similar structures
Assignee: Individual
•
Filing: 1920-08-30
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Granted: 1921-08-13
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Expires: 1940-08-30
Abstract
No abstract record available.
Inventors
- 👤 David Edward Williams
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-11-01 17:14
CPC Classifications
E; E02; E02C; E02C1/00; B; B63; B63C; B63C1/00; B63C1/08; Y; Y02; Y02A; Y02A10/00; Y02A10/30
Claims Analysis
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