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US3477938A
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Anode structure for electrolytic cell
Assignee: Dryden Chem Ltd
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Filing: 1967-10-06
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Granted: 1969-11-11
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Expires: 1987-10-06
Abstract
No abstract record available.
Inventors
- 👤 Morton S Kircher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:48
CPC Classifications
C; C25; C25B; C25B9/00; C25B9/17; C25B9/19; C25B9/70; C25B9/73; C25B9/77; C25B1/00; C25B1/01; C25B1/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2392868A
Cited
US2430374A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-10 | 1973-05-12 | 1973-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-10 | 1977-05-12 | 1977-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-10 | 1981-05-12 | 1981-11-11 | $7700.00 | Window Closed / Lapsed |