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US3393138A
Expired / Lapsed
US
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Aluminum alloy anode and method of using same in cathodic protection
Assignee: Alcan Research and Development Ltd
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Filing: 1965-04-07
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Granted: 1968-07-16
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Expires: 1985-04-07
Abstract
No abstract record available.
Inventors
- 👤 Roy A Hine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:56
CPC Classifications
C; C23; C23F; C23F13/00; C23F13/02; C23F13/06; C23F13/08; C23F13/12; C23F13/14; C22; C22C; C22C21/00; C22C21/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2565544A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-16 | 1972-01-15 | 1972-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-16 | 1976-01-15 | 1976-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-16 | 1980-01-15 | 1980-07-16 | $7700.00 | Window Closed / Lapsed |