US3408280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anode-assembly for cathodic protection systems
Assignee: Hydronautics Inc
•
Filing: 1964-06-24
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Granted: 1968-10-29
•
Expires: 1984-06-24
Abstract
No abstract record available.
Inventors
- 👤 Herman S Preiser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:14
CPC Classifications
C; C23; C23F; C23F13/00; C23F13/02; C23F13/06; C23F13/08; C23F13/16; C23F13/18; C23F13/20; C23F2213/00; C23F2213/30; C23F2213/31
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1506306A
Cited
US2169967A
Cited
US2486871A
Cited
US2661389A
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US2816069A
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US3075911A
Cited
GB944715A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-29 | 1972-04-29 | 1972-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-29 | 1976-04-29 | 1976-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-29 | 1980-04-29 | 1980-10-29 | $7700.00 | Window Closed / Lapsed |