Patent US3534247A successfully refreshed from Google Patents.
US3534247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Current transformer with internal error compensation
Assignee: Canadian Patents and Development Ltd
•
Filing: 1968-05-15
•
Granted: 1970-10-13
•
Expires: 1988-05-15
Abstract
No abstract record available.
Inventors
- 👤 Petar N Miljanic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:38
CPC Classifications
H; H01; H01F; H01F38/00; H01F38/20; H01F38/22; H01F38/28; G; G01; G01R; G01R1/00; G01R1/28; H01F27/00; H01F27/34; H01F27/341; H01F27/42; H01F27/422; H01F27/427
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-12 | 1974-04-13 | 1974-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-12 | 1978-04-13 | 1978-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-12 | 1982-04-13 | 1982-10-13 | $7700.00 | Window Closed / Lapsed |