US3412005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for cathodic protection
Assignee: Individual
•
Filing: 1964-01-16
•
Granted: 1968-11-19
•
Expires: 1984-01-16
Abstract
No abstract record available.
Inventors
- 👤 Beer Ernst
- 👤 Beer Henri Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:47
CPC Classifications
C; C23; C23F; C23F13/00; C23F13/02; C23F13/04; C23F13/06; C23F13/08; C23F13/12; H; H01; H01H; H01H29/00; H01H29/02; H01H29/08; C23F2213/00; C23F2213/30; C23F2213/31
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2419431A
Cited
CA643672A
Cited
US1736986A
Cited
US2636856A
Cited
GB657392A
Cited
GB825184A
Cited
US3081252A
Cited
US3135677A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-19 | 1972-05-20 | 1972-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-19 | 1976-05-20 | 1976-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-19 | 1980-05-20 | 1980-11-19 | $7700.00 | Window Closed / Lapsed |