US2528905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Construction of the lower portion of igneous electrolytic cells
Assignee: Compagnie de Produits Chimiques et Electrometallurgiques Alais Froges et Camargue
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Filing: 1948-04-01
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Granted: 1950-11-07
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Expires: 1968-04-01
Abstract
No abstract record available.
Inventors
- 👤 Ollivier Pierre Jean M Casimir
- 👤 Perieres Rene Amans Pi Gabriel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:33
CPC Classifications
C; C25; C25C; C25C3/00; C25C3/06; C25C3/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US673453A
Cited
FR367165A
Cited
US2034339A
Cited
US2012365A
Cited
GB542886A
Cited
US2344859A
Cited
US2451490A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-06 | 1954-05-08 | 1954-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-06 | 1958-05-08 | 1958-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-06 | 1962-05-08 | 1962-11-07 | $7700.00 | Window Closed / Lapsed |