US3497793A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Error compensation apparatus for instrument transformers
Assignee: IND ELETTRICHE DI LEGNANO SpA
•
Filing: 1966-10-28
•
Granted: 1970-02-24
•
Expires: 1986-10-28
Abstract
No abstract record available.
Inventors
- 👤 Ferdinando Gasparini
- 👤 Luigi Malesani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:39
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/42; H01F27/422; H01F27/427; G; G01; G01R; G01R1/00; G01R1/28; G05; G05B; G05B1/00; G05B1/01; G05B1/02; G05B1/025
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) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |