US3428896A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for transmitting to a remote point a signal that varies as a function of the current flow in a high voltage conductor
Assignee: SCHWEITZER EDMUND O JUN
•
Filing: 1963-08-14
•
Granted: 1969-02-18
•
Expires: 1983-08-14
Abstract
No abstract record available.
Inventors
- 👤 Edmund O Schweitzer Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:27
CPC Classifications
G; G01; G01R; G01R15/00; G01R15/14; G01R15/26
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1723823A
Cited
DE640335C
Cited
US2304535A
Cited
US2647223A
Cited
US2800630A
Cited
US2866159A
Cited
US2724821A
Cited
US3071759A
Cited
US3197702A
Cited
US3307108A
Cited
US3223889A
Cited
US3275892A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-18 | 1972-08-19 | 1973-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-18 | 1976-08-19 | 1977-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-18 | 1980-08-19 | 1981-02-18 | $7700.00 | Window Closed / Lapsed |