US3391072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anode for cathodic protection
Assignee: Pacific Power and Light Co
•
Filing: 1965-10-04
•
Granted: 1968-07-02
•
Expires: 1985-10-04
Abstract
No abstract record available.
Inventors
- 👤 Harry F Pearson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:50
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/62; E04B1/64; E04B1/642; C; C23; C23F; C23F13/00; C23F13/02; C23F13/06; C23F13/08; C23F13/10; E02; E02D; E02D5/00; E02D5/74; E02D5/80; C23F2213/00; C23F2213/30; C23F2213/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1910021A
Cited
US2157180A
Cited
US2358981A
Cited
US2401546A
Cited
US2697070A
Cited
US3019384A
Cited
US3133873A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-02 | 1972-01-01 | 1972-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-02 | 1976-01-01 | 1976-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-02 | 1980-01-01 | 1980-07-02 | $7700.00 | Window Closed / Lapsed |